Holdings

Max holdings is 7.

Fort(3x3)
Requires a village. Buildable by all, but useless. Can be razed.

Castle(5x5)
Requires a town or 3 villages to support.

Palace(7x7)
Can only be built as a part of a city.

Village(4x4)
Buildable by Feudal, Republic and Religious. The cornerstone of an empire. You can have as many as you want, up to your limit.

Town(9x9)
Only one allowed per player. Requires 3 villages.

City(16x16)
Requires at least 2 players working together to found and maintain, other than those created by lore, unless you're a Merchant Republic. Merchant Republic players may have only 1 even if they have subjugated other republics. Requires 6 villages.

Manor(3x3)
Only 1 allowed per player in amerchant republic. This does not count towards max holdings.

Tent village(4x4)
Only 1 allowed per horde player. Can be moved.

Hub(7x7)
Only allowed if the player has subjugated another horde. Cannot be moved. It is removed if it is burnt down.

Temple(3x3)
Must be built close to a village or a town.

Monastery(7x7)
Can be built by itself, but requires 3 villages.

Temple City(7x7)
Can only be built as a part of a city.