National Office for the Protection of Historical Monuments Exhibition Hall
Táncsics Mihály u. 1
About
If you've ever wondered how they restore or preserve all of the beautiful buildings in the city, then this is the place to visit. It's free and it gives a quick overview of Hungarian architecture (and architects), as well as detailing how buildings are maintained. It's really quite fascinating and shows how the work to restore such precious buildings is both painstaking and often controversial.