A great new public transport option is the Opstapper, a transit van that traverses the elegant Prinsengracht -- heart of the historic canal sector -- between Centraal Station and the Music Theater. For a one-zone stamp on your strippenkaart, you can get on or off anywhere along the Prinsengracht. You can hail it on the street, or get on at its starting point in front of Centraal Station. There are no fixed stops. It passes within walking distance of the Anne Frank House, the Leidseplein, and maybe even your hotel. The buses run every 10 minutes from 7:30 AM to 6:30 PM. There are eight seats, and there is room for an additional eight standing passengers.