One of my favourite places was a tiny museum I'd read about online, called the Büchstaben Museum, which was hyped as a typography museum, but was actually more like a sign graveyard. Either way, I loved it!
I'm now pondering my next trip and have been looking at the Russian Red Arrow train from Moscow to St Petersburg, can't beat a good train journey in my view. This old beauty even has its own theme music! What's your dream holiday?