A gem of a library
Den Sorte Diamant13
Why locals love it
With an exterior made of shimmering black granite and a sublime interior of undulating balconies, this learning cathedral of concrete, glass and steel is the epitome of modern Scandinavian architecture and a Copenhagen landmark.
Why you should visit it
No one's suggesting you should spend your holiday reading in a library, but with special events including live concerts, theatre and film screenings, and a building so beautiful you're going to want to lick it, you'll find plenty of motivation to stick around and keep shtum.
The café has a good selection of beers and is perched right on the harbour's edge, so it's a great place to hang out and watch the boats go by.