This classic guided canal cruise is one of the best ways to see Copenhagen, gliding along the waterways from the departure point at Gammel Strand. Over about an hour, the open boat passes the colourful houses of Nyhavn, the Opera House, the Black Diamond library, Christianshavn’s canals and the Little Mermaid statue, with live commentary on the sights. Low bridges and narrow channels bring visitors close to landmarks that are hard to appreciate from land.