Fortifications

2,5005

Provides walls during sieges. Allows the builder to pick one level-1 defensive upgrade.

2,50010

Adds two towers to the battlements that shoot at attackers during sieges. Allows the builder to pick one level-2 defensive upgrade. City dwellings produce +{0}% units.

5,00015

Adds one more grand tower to the battlements that shoots at attackers during sieges and spikes by the walls. Allows the builder to pick one level-3 defensive upgrade. City dwellings produce +{0}% units.