Biking Copenhagen. Copenhagen Biking offers five sightseeing tours: a classic city tour, an everyday tour, an architecture tour, a Carlsberg district tour and a Christiania tour. The tours last three hours and usually depart at 11 am. Adelgade 11, Copenhagen, Capital Region, 1366. 30/11--30--86; bikingcopenhagen.com. From Dkr 250.
DFDS Canal Tours. A one-hour Harbor and Canal Tour leaves from Gammel Strand and Nyhavn every half hour in summer (heated and roofed boats are in service throughout most of the winter). The company also organizes lunch and dinner cruises. Copenhagen, Capital Region. 32--96–30–00; www.canaltours.dk.
Netto-Bådene. Just south of the embarkation point for DFDS Canal Tours is Netto-Boats, which offers hour-long tours for about half the price of its competitors. Copenhagen, 32/54–41–02; www.havnerundfart.dk.
Viking Bus. The Grand Tour of Copenhagen (2½ hours) offered by this company includes Rosenborg Castle, Tivoli, the Glyptotek, the Danish Parliament, the Stock Exchange, the Danish Royal Theater, Nyhavn, Amalienborg Castle, and the Little Mermaid. The City Tour (1½ hours) is more general. The one-hour Open Top Tours are given on double-deckers that allow you to embark and disembark along the route all day with one ticket. Copenhagen, 32/66–00–00; www.sightseeing.dk.