|Notes||Tile Improvement buildable by Worker units on any terrain. Provides:
The Dome is a special improvement that increases Culture.
- Can be build on coast, ocean, or lake tiles with Rising Tide.
Domes increase the culture output of a tile, with the added bonus of increasing city hit points. For high Purity players, the Dome can be a viable alternative to farmland.
Domes are advanced, late-game improvements designed specifically toward the propagation of human life and a favorable environment. Like the Biospheres of old Earth, Domes are controlled ecosystems which allow Purity ideologists to recreate old Earth environments. Their massive size has the added bonus of extending a city’s defense.