From ornate, Victorian-style mansions to humble wooden cottages, people's preferences for where they live differ greatly. This poses the question: What is a house? Architect artist Yoshifumi Nakamura has come to believe the hut is the perfect house.

This three-part exhibition shares Nakamura's passion for huts. Exhibition I examines seven huts from across the world; each of which has been influential to Nakamura's architectural philosophy. Exhibition II will then present specially selected hut-like houses designed by Nakamura. The last portion of the exhibit, located in the courtyard, features a full-scale hut for one person, designed by Nakamura as a condensed version of his own hut-home. Nakamura hopes visitors will begin to ask, "What is a house?"; till June 22.

Toto Gallery-Ma; (03) 3402-1010; Toto Nogizaka Bldg. 3F, 1-24-3 Minami-Aoyama, Minato-ku, Tokyo; Nogizaka Station, Chiyoda Line. 11 a.m.-6 p.m. (Fri. till 7:00 p.m.). Free admission. Closed Sun., Mon., holidays (April 29, May 3-6). www.toto.co.jp/gallerma