In Evony, the Town Hall is the main administrative centre of your city and it is no different in Evony Age 2. The Town Hall will let you set production rates, set tax rates, rename the city, allow you to use levy and comforting and give you a snapshot view of all the buildings in the city.
The level of the Town Hall also governs the number of Valleys you may have. The Town Hall Level also decides the number of resource fields available in the city. Each upgrade will allow more valleys and resource fields.
NOTE: NPC 12, 14, 16 and 18 also have a level 10 Town Hall therefore their maximum valley and resource field limit is same as a level 10 Town Hall city.
Warning: The player will automatically come out of their seven day beginner's protection if they cross level 4 Town Hall.