Buildings are constructible objects built by players that provide population, points, income (stars), or a movement bonus. Buildings include resource buildings, monuments, temples, and roads. Each building can only be built on specific terrain types.

Structures are generated objects that units interact with randomly dispersed across the map at the beginning of the game. Structures include cities, villages and ruins. Resources and terrain are not considered structures.


General Buildings

Image Name Description Terrain Unlocked by Cost (stars)
Resource Buildings
Lumber hut.png
Lumber Hut Produces one population. Forest Forestry 2
Sawmill level 1.png
Sawmill Produces one population for each adjacent Lumber Hut. Field Mathematics 5
Farm Produces two population. Field with crop Farming 5
Windmill 1.png
Windmill Produces one population for each adjacent Farm. Field Construction 5
Mine Produces two population. Mountain with metal Mining 5
Forge level 1.png
Forge Produces two population for each adjacent Mine. Field Smithery 5
Port Produces two population, turns land units into Boats, and forms city connections. Water Sailing 10
Customs house 1.png
Customs House Produces 2 stars per turn for each adjacent Port. Field Trade 5
Xin-xi altar of peace.png
Altar of Peace Produces 3 population and is worth 400 points. Can only be built after completing its corresponding task. Field, water Meditation N/A
Xin-xi emperors tomb.png
Emperor's Tomb Trade
Xin-xi eye of god.png
Eye of God Navigation
Xin-xi gate of power.png
Gate of Power N/A
Xin-xi grand bazaar.png
Grand Bazaar Roads
Xin-xi park of fortune copy.png
Park of Fortune N/A
Xin-xi tower of wisdom.png
Tower of Wisdom Philosophy
Other Buildings
Temple level 1.png
Temple Produces one population and is initially worth 100 points. Point value increases over time. Field Free Spirit 20
Forest temple level 1.png
Forest Temple Forest Spiritualism 15
Mountain temple level 1.png
Mountain Temple Mountain Meditation 20
Water temple level 1.png
Water Temple Water Aquatism 20
Ice temple level 1.png
Ice Temple Ice Polarism 20
Road Icon.png
Roads Decreases movement cost and form city connections. Any land except mountain Roads 2

Buildings Unique to Special Tribes

Image Name Description Terrain Unlocked by Cost (stars)
Sanctuary level 2.png
Sanctuary Produces one star per turn for every adjacent wild animal. Attracts a wild animal to an empty adjacent forest every three turns. Any land Forestry 5
Ice bank level 2.png
Ice Bank Produces three stars per turn for every 20 frozen tiles in the world. Field, ice Trade 20
Outpost Produces one population and forms city connections. Ice Frostwork 5
Algae Produces one population and allows land units to walk on it. Water, ocean Hydrology 5
Clathrus level 2.png
Clathrus Produces one star per turn for each adjacent Algae. Poisons enemy units that step on it. Water, ocean Trade 5
Fungi level 2.png
Fungi Produces one population per turn for three turns. Poisons enemy units that step on it. Any land with spores Farming 5
Mycelium level 2.png
Mycelium Forms city connections within a three-tile radius and heals friendly units that end their turn on or adjacent to it. Field, forest Roads 5

Removed Buildings

Image Name Description Unlocked by Cost (stars)
Old outpost 5.png
Lantern Unique to Polaris. Function varied over time. Varied over time 5
Library 1.png
Library Decreased the cost of researching new technology by 2 stars per adjacent temple. Philosophy 5


Image Name Description
Cities The basic unit of a player's empire. Produces stars every turn and is worth a certain number of points. Place where units are trained.
Villages Become a city once captured.
Ruins Grant a reward once examined by a unit.
Game Mechanics
Buildings and Structures, Cities, City Connections, Combat, Game Modes, Movement, Player Relationships, Population, Ruins, Score, Stars, Technology, Terrain, Tribes, Units, Unit Abilities, Unit Skills, Villages
Community content is available under CC-BY-SA unless otherwise noted.