Each building folder, except the orthodox cathedral, contains two versions - with an animated flag (animation embedded into .nif) and without it. Mediterranean one also has versions with/without the fountain. The particular flags included are added by me, and are just there to show where you can paste the ones you need.
All buildings are reasonably low-poly and have two or three 256x256 textures per model.
Axis & Allies Building Pack 1 - City Centres 2016-10-05
Axis & Allies Building Pack 1 - City Centres