Kromeriz is a very pretty and quiet town close to Olomouc, and is very well worth the trip to get there. I skipped the tour of the palace interior (minimum 90 minutes), but just walked through the gardens, which consist of the more nature-like Palace Gardens (lots of ponds) and the formal Flower Garden. This is one of the most famous gardens in Europe, somewhere between a French Renaissance and an Italian Baroque garden. The town itself has a nice main square and a few pretty churches.