Age of Empires Series Wiki
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This article is about the building in Age of Empires III. For the building in other games of the series, see Castle.

A powerful defensive building that can also train and upgrade artillery.
—In-game description

The Castle is a military/defensive building in Age of Empires III: The Asian Dynasties that is unique to the Asian civilizations (Chinese, Indians, and Japanese). A combination of the Outpost and Artillery Foundry, it attacks nearby enemies, trains and upgrades artillery, and serves as a drop-off point for Home City shipments.

The Chinese also train two of their banner armies in the Castle, the Black Flag Army and Mongolian Army.


Age Unit Cost Pop. Civ.
Age II tech tree aoe3.png
AoE3 Flamethrower icon.png Flamethrower 170 wood,
170 coin
4 Chinese
Flail Elephant icon.png Flail Elephant 125 food,
125 coin
Age III tech tree aoe3.png
Hand Mortar icon.png Hand Mortar 50 food,
90 wood
1 Chinese
Flaming Arrow icon.png Flaming Arrow 100 wood,
300 coin
4 Japanese
Siege Elephant icon.png Siege Elephant 300 wood,
350 coin
7 Indians
Age IV tech tree aoe 3.png
Morutaru icon.png Morutaru 100 wood,
300 coin
3 Japanese



Age Upgrade Cost Effect
Age III tech tree aoe3.png
Hill castle.png Hill Castle 400 wood,
200 coin
Upgrades Castles into Hill Castles (+50% attack)
Age IV tech tree aoe 3.png
Mountain castle.png Mountain Castle 800 wood,
400 coin
Upgrades Castles into Mountain Castles (+50% hit points and attack, +100% anti-ship attack, and a bombard attack with 3 AOE); requires Hill Castle

Further statistics[]

Building strengths and weaknesses
Strong vs. Ships, infantry, cavalry
Weak vs. Artillery, Siege units
Hit points Flying Buttress.png Flying Buttress (+20%)
Attack Heated Shot.png Heated Shot (+1.5x multiplier vs. ships)
Sight Gas Lighting.png Gas Lighting (+4, Europeans only)
Construction cost Cree Textile Craftsmanship.png Cree Textile Craftsmanship (-25% wood)
Tupi Forest Burning.png Tupi Forest Burning (-20% wood)

Home City Cards[]


The Asian Dynasties[]

  • Castles cost 250 wood, 100 coin, take 60 seconds to build, and give 72 XP when built and 144 XP when destroyed.
  • Castles cannot reveal stealth enemies.

Definitive Edition[]

  • Castles cost 250 wood, 50 coin, take 55 seconds to build, and give 60 XP when built and 120 XP when destroyed.
  • Castles can reveal stealth enemies.
  • The Hill Castle and Mountain Castle technologies now also upgrade Blockhouses built by the Chinese by allying with the Russians at the Consulate into Frontier Blockhouses and into Fortified Blockhouses, respectively.


The fortification of towns had been in practice since ancient times, exhibited in the high-walled cities of Rome and the palaces of Byzantium; but in the ninth century, the feudal lords of Europe began to experiment with the castle, or fortified residence. These began as an elevated patch of terrain surrounded by a primitive ditch. Throughout medieval times, as siege technology developed and the threat of war constantly loomed, European rulers began to raise the walls of their fortresses higher and higher, and thicker walls were topped with towers and parapets.

By the thirteenth century, castles had become highly sophisticated, and the integral spine to any kingdom. First, a strategic location was chosen, such as on a high cliff or at the bend in a river. Then a moat was dug, restricting access to a narrow point that was often blocked by a retractable drawbridge. The keep, or innermost part of the castle, was protected by a series of walls that had to be breached in order to enter, defeat the survivors, and claim victory.

The earliest Japanese castle was the yamashiro, a deforested hill carved into a series of walls and courtyards. Each of the horizontal baileys gave defenders an open view of the battlefield. Because it had the same primarily defensive purpose as the European castle, the yamashiro shared many of the same features, with its squat, angular walls surrounding ditches. Also, both structures housed barracks and training facilities for a standing army led by the elite warrior class (the samurai, in the case of the Japanese).