Cities

City sites

City sites are the only locations where Settlers can found new Cities. A city site can be claimed by a nation by moving a Unity onto it.

Barbarians

Barbarians occupy City-States like other Tribes, but they are in a permanent state of War with all Nations. They have a number of special units: Marauders, Skirmishers, Elite Marauders and Elite Skirmishers.

Improvements

Improvements can be used to grand various bonuses to a City. There are two types of improvements: rural and urban.

Rural improvements

Rural improvements may be built on any non-urban tile. Tiles where Rural improvements may be constructed will show the improvement with an icon above if a Worker is currently standing on the tile.

Improvement	Output	Cost	Terrain
Farm	5 Food	20 Wood 1 Orders for 3 years	Lush, Temperate, Arid, Wheat, Barley, Sorghum, Marsh (requires Centralization law)

Urban improvements

Urban improvements expand the urban area of a city by transforming the terrain underneath to Urban.