If you're looking for a different way to enjoy the sights of Tokyo, try going on a cruise. Many of the cruise lines start or end near popular sightseeing areas, so you can try moving from one area to another by boat instead of the normal choice of train or taxi.

Tokyo Cruise

tokyo cruise mapThis cruise company has 4 main lines, the Sumida River line, the Asakusa-Odaiba direct line, the Odaiba line, and the Tokyo Big Sight Palette Town lines. The most popular is the Sumida River Line or the Asaksa-Odaiba line, which both start in Asakusa, a popular tourist area in the older areas of Tokyo. Odaiba, is a water front town where there are large shopping malls, popular with the younger generation. They also have a sakura night-tour starting in March.
Departure point: 3 min. from Asakusa Station on the Tokyo Metro Ginza line
Reservations: 0120-977311(9:30~17:30) info@suijobus.co.jp

Tokyo Bay Cruise Vingt et un

vingt et un
How about about a luxurious cruise while eating lunch or dinner. They have 3 types of 2 hour tours according to the time, lunch time, twighlight, or dinner time. The cruise will start at Takebashi pier, and you'll be able to see Tokyo Tower, the Rainbow Bridge, Haneda Airport, and other sights around Tokyo Bay.
Departure point: 1 min. walk from Takebashi Station on the Yurikamome line
Reservations: 03-3436-2121

Tokyo Mizube Line

tokyo cruise
The Tokyo Mizube line is like a "water-bus" that runs from Sumida Azumabashi, a little above the Tokyo Sky Tree on the Sumida River, all the way down to Odaiba. You can get on and off just like a bus anywhere you like without reservations, and the price starts from 300 yen, so it isn't too expensive. You can get to and from Tokyo Sky Tree, Asakusa, Ryogoku (the town of sumo wrestlers), Hamarikyu Gardens, and Odaiba on this one line.
Tel: 03-5608-8869
Closed: Every Monday