As you progress through the game you will discover that at one point or another you will need to level up almost evey building type to maximum rank if you want to advance. There is no avoiding this. Your tarvern, quarry and wall must be at their max levels in order to level up your town hall. In addition to that, each town hall level requires a different building, which itself often requires a different building to be leveled up.
In the early stages of the game the only buildings that can be neglected are resource buildings that require only one of each type to be maxed out while any others can remain at level 1.
There are two types of buildings in Rise of Civilizations, economic and military. Below is a list of the different building with a brief description of their function.
City Hall
The City Hall is the core of your civilization, without upgrading it you will not be able to progress in the game.
Lumber Hill
Produces wood
Shop Farm
Produces food
Quarry
Get stones from here
Goldmine
Mine gold coins
Trading Post
When you have joined an alliance this facility can be used to exchange resources with members.
Courier Station
Merchants spot
Academy
Research technologies
Storage
Protects the resources from intruders
Hospital
Heal the troops here
Castle
Use Raily feature
Tavern
Recruit commanders, open chests
Barracks
Train infantry units
Archery Range
Train archers
Stable
Train cavalry units
Siege Workshop
Train siege weapons
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