I think Zagreb is an underrated destination. It's got a number of interesting museums, including the Mestrovic atelier. There's a museum called Museum of Broken Relationships, which is funky, yet compelling. Exhibits are donated momentos and each is accompanied by a short explanation. The museum of Naive Art explores art form that emerged in the early 20th century. The artists are self-taught, generally farm workers who painted during the winter, when they were less occupied with work. I don't know if it's the only museum, but I do remember that it is the first of its kind. The Zagreb City Museum is interesting in that it covers the history of the city from Roman times to the present, including a short news broadcast videos, which I found fascinating. Copenhagen is a great city, but definitely Zagreb for something European, yet not quite in the same mold as big European cities like Copenhagen..