This may be Tokyo Design Week, but there are a number of interesting art events worth your time as well. Some are best seen this weekend:
1) This Saturday only is the Kunst Oktoberfest, a free bus tour of an impressive number of interesting contemporary art galleries. Simply hop on and off the buses as they snake through Chuo-ku to places like Ginza's Gallery Koyanagi and TOKYO Gallery+B.T.A.P and Bakurocho's CASHI and Radi-um von Roentgenwerke. The buses give you around twenty minutes at each gallery before whisking you away to the next spot.
Oh, and did I mention that there will be free COEDO beer on the bus? Here's a review of last year's. The map you see on the right can be found on the Japanese press release here.