Tokyo is a city of water, through which numerous rivers flow. A cruise on the Sumida River offers a chance to experience a number of surprising views of the familiar Tokyo cityscape, from out-of-the-ordinary vantage points. Another major attraction on this cruise is the collection of historic bridges spanning the Sumida River. These include some bridges named important cultural properties by the Japanese government, with a wealth of unexpected sights you’ll want to see. This also is a very popular cruise area during the cherry-blossom season in the spring.