Correct, Dutchy! (The Fridericianum was one of the first public art museums in Europe, founded in 1789. And was - for a short period - the home of the 'Kingdom of Westphalia's' parliament. It's now used for speical exhibitions as well as one of the homes of the documenta.)
Your turn again.
Hmm, I'd just finished looking at photos of Warzsawa (capital) to little avail. I may have to face the fact that I don't know what the building is. Is it an old fortress?