Good Scandinavian Mix of Old and New
Copenhagen reminds me of a Danish equivalent to Munich. It maintains a certain air of it's past while still looking to an environmentalized and modern future. Fortunately, WWII was kinder to Copenhagen, and there is a lot of history to get into before the sun sets over the city. Copenhagen lacks a varied nightlife, though, and travellers not looking to see castles and other remnants of royalty may quickly tire out of the town. During the warmer times there is Trivoli and Legoland, though.
Insider Tip:Denmark's national museum is free of charge, even without the "Copehagen Card" and includes (at the time of this review) some special exhibits not related to Danish history (fur production, at the moment), so budget travellers wanting to delve into some Danish discussions can try there.