K15Art Project



Kanda River

Free Admission

Crowdfunding Tenmasen River Race that Welcomes the Participation of 10,000 Citizens

The Tenmasen Race is a project that races miniature Tenmasen boats (modeled after Japanese traditional wooden boats) that are approx. 30 cm in length (1 miniature Tenmasen is purchased by registering with a 1,000 yen donation), along the natural flow of the Kanda and Nihonbashi Rivers. The miniature Tenmasen are floated all at once from the river’s upstream, with a special prize given to the boat that crosses the goal first. Part of the donation proceeds will be used toward river clean-up, promotion of river culture, and Tenmasen production costs.

This project is a medium for using rivers as a form of expression, and unique to the world, serves as a community art project that will widely transmit ideas to all nations calling upon SDG’s. The organization structure will be made up largely by citizen volunteers who will aid in operations and production as part of the greater project plan. Moreover, the donations collected through Tenmasen will go toward support funds for organizations promoting river culture, leading to heightened independence and cooperation of local citizens.

(As of March 2020)

1: “Tenmasen Project” Miniature Tenmasen boat made of thinned wood, people can participate in the race by purchasing one for 1,000 yen. 2006-, Kamishogawa, Himi City, Toyama Prefecture
2: “Tenmasen Project” Each miniature Tenmasen boat is marked with a registration number. The boats gently follow the flow of the river. 2006-, Kamishogawa, Himi City, Toyama Prefecture
3: “Tenmasen Project” The first boat to reach the goal is the winner. In the case of a close call, the winner will be judged by observing photos. 2006-, Kamishogawa, Himi City, Toyama Prefecture


commandN (Artist Initiative)

commandN was started in 1997 by members active in artistic and cultural activities. The group took on the name of the Macintosh shortcut key “command+N”. In 2010, it went on to become a general non-profit organization. Under the concept of an “artist initiative”, numerous projects have been brought to the city center through independent planning and operation by artists themselves. The organization held its 20th anniversary exhibition “Open the New page!” in 2017.



1 Kanda-Sudacho Chiyoda-ku Tokyo


・3 minutes walk from “Awajicho” Station on the Tokyo Metro Marunouchi Line.
・3 minutes walk from “Ogawamachi” Station on the Toei Shinjuku Line.
・6 minutes walk from “Akihabara” Station on the JR Line.


(Tokyo Biennale Executive Office)