Used to research unit improvements. The armory is also required to train certain units.
Used to train and upgrade foot soldiers and archers.
Used to train vicars.
Trains and upgrades naval units.
Provides a never ending source of food. The rate at which food comes in can be improved at a Settlement or Town Center.
Used to garrison units. Units garrisoned do not count to the population cap.
Allows units to pass through the section of the wall the gate is built on.
Increases population capacity by ten.
If built over a gold or stone mine the Mining Camp will generate a steady stream of gold or stone. The rate at which gold or stone comes in can be improved at a Settlement or Town Center.
A drop point for resources. Can research technologies to improve resource gathering rates. Can be garrisoned with citizens to create a Town Center.
Builds and upgrades siege units.
Fires at nearby enemy units.
A drop point for resources. Creates citizens. Used to advance to the next age. Can research technologies to improve resource gathering rates.
Researches classified projects.
Can block off sections of the map from the enemy.