Talk:XP levels/@comment-85.169.172.166-20121214072259/@comment-3991817-20121214105827

The high-level buildings (from the European country house onwards I think) were added later on in the game, but this was not reflected well in the level-up unlock reward screen. But although the game might not tell you that you unlocked new buildings, the important part is that you did unlock those buildings :)