Koumi-machi Kōgen Museum of Art

小海町高原美術館

Koumi-machi Kōgen Museum of Art at Toyosato 5918-2, Koumi Town, Minamisaku District, Nagano Prefecture (postal code 384-1103; telephone 0267-93-2151) is a highland museum designed by Tadao Ando amid surrounding nature. Official visitor pages list hours from 9:00 to 17:00 with last entry at 16:30. Admission is 500 yen for adults and free for high-school students and younger, with a 400 yen group rate for parties of 20 or more. Closed on Tuesdays, the day after public holidays, listed installation periods, and in winter from 23 December 2026 through early April 2027. Confirm the closing calendar before travel.