The Shinagawa Aquarium’s Tunnel Tank lets you walk among sharks and eels-just like Washington! Or take in the “trick art” at the JAIB Museum: jokey, 3-D paintings based on Western masterpieces. Souvenirs for Chelsea? The teen boutiques on Takeshita Street feature a wide array of Japanese-style grunge wear.

If you tire of sushi, Tokyo has lots of McDonald’s outlets-or grab a burger at the hipper Johnny Rockets in Roppongi. Work it off at the postmod basketball courts of Harajuku Hoop Town. (Challenge Japan’s P.M. to one-on-one-winner calls the shots on trade.) Or practice Saddam-taming with a virtual-reality game of Battletech at Dr. Jeekans’s five-story video arcade. By night, Juliana’s disco is the place.