Christianshavn is the island just across the harbour from the old city centre, connected by the Knippelsbro bridge. It was built in the 17th century as a commercial and military harbour district — the grid of canals and Dutch-style brick buildings reflects that origin. Today it is a residential neighbourhood with a mix of long-time residents and newcomers, canal-side cafes, and Christiania at its southern end.
Walking the canals of Christianshavn is one of the best things to do in Copenhagen on a fine day. The Church of Our Saviour (Vor Frelsers Kirke) has a corkscrew spire you can climb for panoramic views over the city and the water. The neighbourhood has a more local, less touristy feel than the medieval city despite being just minutes away by bike.