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Buildings are a type unit that are not controlled by any player. At the beginning of each match, a set of buildings spawn at set locations for both teams. Both factions have the same set of buildings, with only their appearance differing from each other. Buildings take mostly defensive roles and are the main objective of the game.

All buildings have the same base properties. They are immune to most spells (with only a few spells affecting them), have the structure armor type, deal siege damage if they can attack and are immobile. When destroyed, some buildings grant gold to the entire enemy team, while others grant gold only to whoever made the last hit. Once below 10% health, buildings (except for the Ancients) can be denied to prevent the enemy from getting their gold bounties, or to reduce the amount they get. Buildings do not grant experience. Once destroyed, a building is permanently lost, as they do not respawn.

There are a total of 29 buildings on each side.


Radiant and Dire towers

Towers are the main line of defense for both teams, attacking any non-neutral enemy that gets within their range. Both factions have all three lanes guarded by three towers each. Additionally, each faction's Ancient has two towers as well, resulting in a total of 11 towers per faction. Towers come in 4 different tiers:

Tier 1 towers are invulnerable during the preparation phase, until the battle begins. Each Tier 2 and tier 3 tower is invulnerable until the lower tier tower preceding it in its lane is destroyed. The two tier 4 towers are invulnerable until any of the tier 3 towers have been destroyed. Barracks do not have to be destroyed to make tier 4 towers vulnerable. Both of the tier 4 towers must be destroyed in order to remove the Ancient's invulnerability.

All towers have a vision range of 1900 during the day. Tier 1 towers have a night vision of 600, while higher tier towers have a night vision range of 1100. Additionally, all towers have True Sight in a 700 area around them, and have one defensive and one supportive ability. Towers can attack, but never attack nearby neutral creeps.

Building Health Deny Health Armor Health Regen Backdoor Protection
Tower (Tier 1) 1800 180 12 0 No
Tower (Tier 2) 2500 250 16 0 Yes
Tower (Tier 3) 2500 250 16 0 Yes
Tower (Tier 4) 2600 260 21 0 Yes
Building Damage BAT DPS Attack Range Projectile Speed
Tower (Tier 1) 88‒92 0.9 100 Ranged 700 750
Tower (Tier 2) 170‒174 0.9 191.11 Ranged 700 750
Tower (Tier 3) 170‒174 0.9 191.11 Ranged 700 750
Tower (Tier 4) 170‒174 0.9 191.11 Ranged 700 750

Towers grant a gold bounty to whoever makes the last hit, but also grant a team bounty to the entire team. When denied, both team get half the team bounty.

Building Team Bounty Deny Bounty Last Hit Bounty Last Hit Total No Last Hit Total Denied Total
Regular Turbo Regular Turbo Regular Turbo Regular Turbo Regular Turbo Regular Turbo
Tower (Tier 1) 90 Gold 180 Gold 45 Gold 90 Gold 75‒165Gold 150‒330Gold 525‒615Gold 1050‒1230Gold 450 Gold 900 Gold 225 Gold 450 Gold
Tower (Tier 2) 110 Gold 220 Gold 55 Gold 110 Gold 95‒165Gold 190‒330Gold 645‒735Gold 1290‒1470Gold 550 Gold 1100 Gold 275 Gold 550 Gold
Tower (Tier 3) 125 Gold 250 Gold 62.5 Gold 125 Gold 115‒165Gold 230‒330Gold 740‒830Gold 1480‒1660Gold 625 Gold 1250 Gold 312.5 Gold 625 Gold
Tower (Tier 4) 145 Gold 290 Gold 72.5 Gold 145 Gold 135‒165Gold 270‒330Gold 860‒950Gold 1720‒1900Gold 725 Gold 1450 Gold 362.5 Gold 725 Gold

Attack Priority[]

Towers are using regular auto-attacking, so when multiple enemies engage the tower, it naturally targets the first enemy that gets within its attack range. It sticks with that target until it can no longer be attacked (it dies, gets out of attack range or becomes attack immune). Once that happens, it chooses the next attack target using the following priority system.

  • Closest enemy unit attacking the tower itself
  • Closest enemy unit attacking an ally of the tower
  • Closest enemy unit

It does not matter whether the unit is a hero or a non-hero unit, they are treated equally. Units treated differently are wards and siege creeps. These units are always attacked as last. If a tower attacks one of these units, and then another unit or hero come within range, the tower immediately switches to the new unit. Siege creeps have a higher priority than wards.

There are two additional scenarios where the tower switches its attack target immediately:

  1. If an enemy hero attacks an allied hero while within 500 range of the tower, it immediately switches to that enemy hero. This only works against enemy heroes. Non-hero units attacking heroes do not cause the tower to switch aggro towards them. The attack does not have to finish or connect, the attack order alone is enough. However, it has to be a regular attack; instant attacks or manually casting an active attack modifier do not count. This behavior is akin to lane creeps' behavior, which do the same in this scenario.
  2. On the other side, if the currently targeted enemy unit (hero or non-hero alike) is ordered to attack its own allies (hero or non-hero alike), the tower immediately switches aggro to another unit, using the priority system mentioned above. This as well does not require the attack to start, the order alone is enough. Enemies can de-aggro the tower only once every 2.5 seconds by using this technique. This behavior is also equal to that of lane creeps. If the tower has already started its attack on a unit, it will finish that attack, even when aggroed or de-aggroed with these techniques. This means it is impossible to cancel the tower's attacks by changing its aggro. Its attacks only cancel when its current target cannot be attacked anymore.

Tower Abilities[]

Tower Protection
Pierces spell immunity.
Tower Protection icon.png
Increases armor and health regeneration of nearby allied heroes.
Radius: 900
Armor Bonus (Tier 1): 3
Armor Bonus (Tier 2/3/4): 5
Health Regen Bonus (Tier 1): 1
Health Regen Bonus (Tier 2/3/4): 3
Aura Linger Duration: 0.5
Modifiers [?]


  • The aura's buff lingers for 0.5 seconds.
  • Tier 1 towers can regenerate up to 60 health in one minute.
    • Tier 2/3/4 towers can regenerate up to 180 health in one minute.
  • Multiple instances of Tower Protection do not stack.
    • When teleporting from a tier 2/3/4 tower to a tier 1 tower or vice versa, the armor and health regen bonuses update after the linger time.


Radiant and Dire ranged (L) and melee (R) barracks

See also: Lane creeps

Barracks (commonly shortened to Rax or Racks) are buildings, defended by their tier 3 towers, that are responsible for keeping lane creeps as powerful as their counterparts. There are two Barracks for each lane per faction - one for melee creeps (called Melee Barracks or Melee Rax), and one for ranged creeps (called Ranged Barracks or Ranged Rax). The ranged barracks are always located to the left of the melee barracks on each lane and both factions.

Barracks are invulnerable until the tier 3 tower guarding them is destroyed. The loss of barracks does not stop lane creeps from spawning. However, destroying Barracks grants the destroying team super creeps in that lane, corresponding to which one was destroyed, which are more powerful and grant less bounties than regular creeps. Super melee creeps spawn when the melee barracks get destroyed, while super ranged creeps spawn when the ranged barracks are destroyed. When all 6 Barracks of a team are destroyed, mega creeps start spawning on every lane for the enemy, even more powerful than super creeps.

All barracks have a vision range of 900 during the day and 600 during the night. They cannot attack, have no special abilities and have no True Sight.

Building Health Deny Health HP Regen Armor Backdoor Protection
Melee Barracks 2200 220 5 15 YesY
Ranged Barracks 1300 130 0 9 YesY

Barracks grant a gold bounty to whoever makes the last hit, but also grant a team bounty to the entire team. Denying Barracks does not reduce the team bounty.

Building Team Bounty Deny Bounty Last Hit Bounty Last Hit Total No Last Hit Total Denied Total
Regular Turbo Regular Turbo Regular Turbo Regular Turbo Regular Turbo Regular Turbo
Ranged Barracks 90 Gold 180 Gold 90 Gold 180 Gold 90‒135Gold 180‒270Gold 540‒585Gold 1080‒1170Gold 450 Gold 900 Gold 450 Gold 900 Gold
Melee Barracks 155 Gold 310 Gold 155 Gold 310 Gold 90‒135Gold 180‒270Gold 865‒910Gold 1730‒1820Gold 775 Gold 1550 Gold 775 Gold 1550 Gold


Radiant's and Dire's Ancient

Ancients (also commonly refered to as Thrones, or Tree for Radiant's ancient and Throne for Dire's ancient, as legacy names from DotA) are massive structures found inside each faction's base and are the main objective. In order to win, the enemy team's Ancient must be destroyed, while the own one must be kept alive. Ancients are guarded by their two tier 4 towers. The Ancients are invulnerable until both of their tier 4 towers are destroyed.

Both ancients have a vision range of 2600 during the day and 2600 during the night. Additionally, they have True Sight in a 900 area around them.

Building Health Deny Health HP Regen Armor Backdoor Protection
Ancient 4500 N/A 12 13 YesY


Radiant's and Dire's fountain

Fountains are buildings located in the respawn areas of both bases, and provide scaling health and mana regeneration to all allied units near it. They also greatly defend the spawn area, blasting intruding enemies with very rapid high-damaging attacks, which grow stronger with each blow, have 25% accuracy, dispel consumables, and disable Blink Dagger, Heart of Tarrasque and other abilities that are normally disabled by player-based damage. Fountains use the same attack priority system as towers, except that they cannot be aggroed immediately by attacking an enemy hero. Fountains are permanently invulnerable, so they can never be destroyed.

Both fountains have a vision range of 1800 during the day and 1800 during the night and can attack. Additionally, they have True Sight in a 1200 area around them.

Building Damage BAT DPS Attack Range Projectile Speed Backdoor Protection
Fountain 290‒310 0.15 2000 1200 1400 NoN

Fountain Ability[]

An invulnerable Primal Beast minimap icon.png Primal Beast due to enemy presence upon respawning.

Rejuvenation Aura
Can be used by illusions. Pierces spell immunity.
Rejuvenation Aura icon.png
Heals 5% HP and 6% mana per second.
Radius: 1200
Max Health as Regen Bonus: 5%
Max Mana as Regen Bonus: 6%
Aura Linger Duration: 3
Modifiers [?]


  • The aura's buff lingers for 3 seconds.
  • Can regenerate up to 300% of a unit's max health and 360% of a unit's max mana in one minute.
  • Can fully regenerate a unit's health within 20 seconds and mana within 16.67 seconds.
  • The aura also causes Bottle icon.png Bottles to refill and provides invulnerability to the team's couriers.
  • Using Regenerate while outside the fountain area instantly removes the lingering buff.
  • When a hero respawns while there is an enemy hero within the base area, the respawning hero gets the invulnerability buff.
    • This buff turns the hero invulnerable and untargetable, and lasts until there are no enemy heroes within the base, or until the hero is issued any command.
    • This includes any unit orders, like moving or casting abilities, as well as shop interactions like purchasing or selling items.
    • Affected heroes are visually distinguishable from unaffected heroes.

Fountain Damage
Pierces spell immunity.
Sanctuary icon.png
Taking increasingly more damage from the fountain each time you are attacked
Attack Damage Bonus per Stack: 3
Accuracy: 25%
Debuff Duration: 12
Modifiers [?]


  • On each attack, first adds 1 stack and then deals damage based on the stack count.
    • This means that the bonus damage is applied even with the first attack.
  • The bonus damage is dealt in one instance together with the attack damage, and counts as attack damage as well.
  • Each successful attack refreshes the whole stack. Missed attacks neither place the buff, nor add a stack or refresh it.
  • The number of stacks is visible on the debuff icon placed on attacked units.
  • Does not work against wards.

Effigy Buildings[]

Radiant and Dire effigy buildings

In addition to the above buildings, there are other buildings that act as buffers within a base, called Effigy Buildings, or Filler Buildings (although they are just named Building in-game). These buildings exist only to occupy enemy creeps before reaching the tier 4 towers or the Ancient, and therefore give the defending players more time to act. There are 7 such buildings in each base, spread evenly around the Ancient.

Five of the seven Effigy buildings (the 5 forming a half-circle around the Ancient) are customizable with Effigy Blocks, giving them a different look and making them display a text notification when destroyed. This has purely cosmetical values and does not alter them in other ways. Each player can customize one of the five Effigy Buildings in their base.

All effigy buildings have a vision range of 900 during the day and 600 during the night. They cannot attack, have no special abilities and have no True Sight.

Radiant's buildings have two different models, while the Dire have one model for all.

Building Health Deny Health HP Regen Armor Last Hit Bounty Backdoor Protection
Regular Turbo
Effigy Building 1000 100 0 10 68 Gold 136 Gold YesY


Outposts in neutral, Radiant and Dire states.

Outposts are buildings located within the primary jungles of both teams, close to the small neutral creep camps on the highground - West from the camp in the Radiant jungle and East from the camp in the Dire jungle. Outposts start out belonging to the team on their side, and can be captured by the enemy after destroying a tier 2 tower. Taking back a stolen outpost can be done without having to destroy an enemy tier 2 tower.

Outposts have a ground vision range of 500 during the day and 500 during the night. Additionally, they have True Sight in a 500 area around them. The vision and True Sight are only granted to the controlling team. Holding ALT displays the vision range, regardless of which team the outpost belongs to. The outposts are always visible through the fog of war, no matter whom they belong to, so capturing them can be easily noticed by the other team, as its animations are visible, and the sound is audible. When under control, outposts can be teleported to with Town Portal Scroll icon.png Town Portal Scrolls and Boots of Travel icon.png Boots of Travel, although with a lower teleport radius and a longer channeling time. Losing control of an outpost while channeling a teleport does not cancel the channeling.

Building Health Deny Health HP Regen Armor Backdoor Protection
Outpost 450 - 0 0 NoN

Although attackable by non-hero units, and targetable by spells that affect buildings, outposts cannot be damaged at all, so they are undestroyable.

Outpost Ability[]

Watch Tower icon.png
There is no description for this ability.
True Sight Radius: 500
Capture Distance: 400
Capture Time: 6
Experience Per Minute: 2
Experience Gametime Interval: 60
True Sight Aura Linger Duration: 0.5
Modifiers [?]


  • Capturing an outposts causes its teams to get changed, so that it now grants vision, true sight and experience to the team that captured it.
  • Can only be captured after at least one enemy tier two tower has fallen.
  • An outpost can be captured by ordering the hero to attack it. An attack order is given by right-clicking, or by pressing the attack hotkey and selecting the outpost as a target.
    • Once the hero is within the capture range, the channeling for the capture begins.
    • Meepo minimap icon.png Meepo clones, Tempest Double minimap icon.png Tempest Doubles and an upgraded Vengeful Spirit minimap icon.png Vengeance illusion are also able to capture the outpost.
    • Since a hero executing an attack order is required to capture it, it cannot be captured while disarmed. However, getting disarmed while already channeling it does not cancel it.
  • The capture time gets lower the more players channel it, equaling the given channel time, divided by the amount of players who channel.
    • This results in a channel time of 6/3/2/1.5/1.2 seconds for 1/2/3/4/5 channeling players.
    • The same player channeling an Outpost with multiple heroes (via clones) does not speed up the channel time.
  • While channeling, the enemy gains caster vision over the channeling heroes, so that the capturing heroes are always visible to their enemies.
  • Outposts grant experience to the owning team on each minute mark.
    • Only one outpost may grant experience. When owning both outposts, the experience does not get doubled.
    • Grants each allied hero 2/4/6/8/10/20/30/40/60/80/100/120/180/240 Experience Experience on the 1/2/3/4/5/10/15/20/30/40/50/60/90/120 minute marks.
  • The True Sight is provided within the whole area, regardless of the buildings actual vision. It is fully unobstructed.
    • The True Sight is provided by an aura which affects enemies. Its debuff lingers for seconds.

Backdoor Protection[]

Backdoor Protection areas.

Backdoor Protection visual effect on towers.

Backdoor Protection is a passive ability almost all buildings have. Tier 1 towers, Outposts and Fountains are the only buildings without this ability. While active, Backdoor Protection grants high damage resistance to the building, and causes it to heal back any damage it takes from enemy units, making them difficult to destroy. This protection deactivates when an enemy lane creep moves within range of the building (if it is a tower outside the base), or gets close to the team's base (if it is a building within the base). The creep must not be dominated by a player, only AI-controlled lane creeps can deactivate the protection. Once deactivated, it takes some time for the protection to activate again.

There are 4 separate disable areas of Backdoor protection. Each tier 2 tower has its own circular area centered on them, providing protection to themselves, and the ancient has a gigantic circular area centered on it, providing protection to all buildings inside the base (except the fountain). This means each of the tier 2 towers have independent protections, meaning when one is disabled, the others are not disabled. They are also independent from the base protection. Meanwhile, all buildings inside the base share one protection and lose it simultaneously when disabled. The radius of the Ancient's disable area is so huge that it goes beyond the elevated base area. On the Dire side, it reaches up until halfway between the top tier 2 tower and the top base ramp, up to the mid tier 2 tower and up until just shy of the ward spot next to the bottom tier 2 tower. On the Radiant side, it reaches behind the top tier 2 tower, beyond the mid tier 2 tower and halfway between the bottom tier 2 tower and the bottom base ramp.

Backdoor protection is not responsible for the invulnerability buildings have, so the buildings still stay invulnerable if their corresponding towers are not destroyed first.

Backdoor Protection
Backdoor Protection icon.png
Passive / Aura
Structure takes reduced damage, and quickly regenerates any damage taken while no enemy creeps are nearby.
Search Radius (Tier 2 Tower): 900
Search Radius (Ancient): 4000
Heal per Second: 90
Damage Reduction: 50%
Protected Illusion Damage Reduction: 75%
Illusion Attack Damage Reduction: 60%
Reactivation Delay: 15
Aura Linger Duration: 0.5
Modifiers [?]


  • All buildings, except for tier 1 towers have this ability (although tier 1 towers have the 60% attack damage reduction against illusions).
  • Tier 2 towers have a search radius of 900 centered on them, each of them independent from each other.
  • The base buildings depend on the Ancient's search radius of 4000 centered on it. This means they all lose the protection together.
  • The unit detection is aura-based. If an enemy lane creep gets within the search radius of the tower/ancient the protection is lost.
    • The aura's effect lingers for 0.5 seconds, so the total reactivation delay is effectively 15.5 seconds.
  • Applies generic incoming damage reduction on the building. Stacks additively with other sources of generic incoming damage manipulation.
    • The reduction affects all damage the building takes that is not flagged as HP removal.
    • While protected, the building takes 50% less damage from any source, and 75% less damage from illusions.
  • The illusion attack damage reduction does not require backdoor protection to be active and works on all buildings, including tier 1 towers.
    • Applies unique incoming damage reduction to illusion attack damage. Stacks multiplicatively with sources of generic incoming damage reduction, like the active aspect of backdoor protection.
    • If a building is protected, the building takes 90% less attack damage from illusions. Their spell damage is only reduced by 75%.
  • If a backdoor-protected building is damaged by an enemy, it immediately starts healing back.
  • Heals 9 health in 0.1 second intervals, which translates to 90 health per second.
    • This means, it is possible to destroy protected buildings by dealing more than 90 damage per second (after reductions).
  • Only heals back damage dealt by enemy units. Damaged dealt by allies is not healed back.

True Sight[]

Main Article: True Sight

Towers, Ancients and fountains, all have True Sight, the ability to detect nearby invisible enemy units. The radius' are different for between them.

True Sight
Pierces spell immunity.
Sentry Ward ability icon.png
Adds the ability to see invisible units and wards to any allied vision within the structure's range.
Radius (Fountain): 1200
Radius (Ancient): 900
Radius (Tower): 700
Aura Linger Duration: 0.5
Modifiers [?]


  • The True Sight is provided within the whole area, regardless of the buildings actual vision. It is fully unobstructed.
  • The True Sight is provided by an aura which affects enemies. Its debuff lingers for 0.5 seconds.

Glyph of Fortification[]

A Glyphed tower.

The Scan button is located on the right of the minimap.

Scan and Glyph icons are split up for spectators, showing both teams' cooldowns.

The Glyph of Fortification (or Glyph in short) is an ability usable by any player that causes all friendly buildings and lane creeps to become impervious to damage for a short duration, while also granting tier 2 and higher towers a multishot attack, allowing them to attack multiple enemies at the same time. The effect has a rather low duration and very high cooldown, making the timing of usage very important. The Glyph is used strategically to stop enemy pushes or slow them down long enough to organize a defense. It may also be used offensively to secure a push by granting the creep waves damage immunity at the right time, or even for finishing enemies off by using the multishot attacks.

The Glyph of Fortification can be activated by any player with a button at the right of the minimap or the shortcut they defined in the settings. The Glyph's cooldown is shared by the entire team, meaning if one player uses it, it goes on cooldown for all players of the team. However, whenever a tier 1 tower falls, the Glyph's cooldown gets refreshed 1 second later.

Glyph of Fortification
Glyph of Fortification icon.png
No Target
Grant your structures and lane creeps invincibility for 7 seconds. Refreshed if a first-tier tower falls.
Bonus Attack Targets (Tier 2/3/4): 4
Duration (Buildings): 7
Duration (Creeps): 4
Cooldown: 300
Modifiers [?]


  • Grants all allied buildings and lane creeps 100% incoming damage reduction, so they take absolutely no damage from anything.
  • Does not grant invulnerability, as this would prevent targeting spells or attacks on them, which is not the case.
  • This means that instantly killing effects can still kill glyphed units.
  • Tier 2 and higher towers gain a multishot attack from the Glyph, allowing them to attack multiple targets at once.
    • Causes the towers to perform instant attacks on the closest 4 enemies within attack range whenever they launch an attack projectile.
    • This means all projectiles are released at the same time together with the main attack.
    • Therefore, it does not matter whether the primary attack misses or not, the extra projectiles are still released.
    • Does not target wards, buildings, invisible units, attack immune units, or units inside the Fog of War, but does target couriers.
    • However, attacking wards or buildings still causes secondary projectiles to hit valid targets within the radius.
  • The cooldown gets refreshed one second after a tier 1 tower falls.
  • The Glyph goes on cooldown upon match begin, so that it is ready 3 minutes after the first creeps spawn.

Glyph Trivia[]

  • In DotA, Glyph grants friendly buildings spell immunity and +9999 armor, instead of 100% damage resistance like in Dota 2.
    • This means physical attacks still did 1 damage to them, since 100% physical damage resistance cannot be achieved with just armor, and the game rounds damage numbers to full numbers.
    • This also means that fortified buildings cannot be targeted by some spells which otherwise could target them.
  • In earlier versions of DotA, Glyph did not grant spell immunity, and skills such as Pugna minimap icon.png Pugna's Nether Blast could deal damage through it.

Abilities Affecting Buildings[]

The following abilities can target or damage buildings. Hero abilities that deal physical attack damage are reduced by Reinforced as well as standard armor value reductions.

1 Requires Talent talent.
2a Requires Aghanim's Scepter icon.png Aghanim's Scepter.
2b Requires Aghanim's Shard icon.png Aghanim's Shard.
Affects Buildings Conditionally

Recent Changes[]

Main Article: Buildings/Changelogs
    the Offlane Towers of both Radiant icon.png Radiant and Dire icon.png Dire 320 units further away from their bases.
  • Unknown Unit icon.png Fountain now grant invulnerability to heroes upon respawning if there are enemy heroes within their base as they respawn. [?]
  • Attack and armor types are now represented through abilities instead of classes.
    • ADDED
      the new Reinforced ability for all buildings except Unknown Unit icon.png Outposts.
      attack class from Siege to Default.
      defense class from Structure to Default. [?]
  • Increased Backdoor Protection incoming damage reduction from 40% to 50%.
  • Unknown Unit icon.png Outposts
    • Reduced vision range from 700 to 500.
    • Watch Tower
      • CHANGED
        experience gain formula from 20XP/min - 50XP to 2XP/min.
      • Reduced experience gain interval from 600 to 60.
      • Compared to the previous version at 10/20/30/40 minutes, total ExperienceXP given per player changed from 150/500/1050/1800XP to 110/420/930/1640XP.
      • Reduced True Sight radius from 700 to 500.

See Also[]