Tokyo National Museum - Honakan (Japanese Gallery) The original Main Gallery (designed by the British architect Josiah Conder) was severely damaged in the Great Kanto Earthquake of 1923. In contrast with the original building's more western style, the design of the present Honkan by Watanabe Jin is the more eastern "emperor's crown style". Construction began in 1932, and the building was opened in 1938. The displays provide a general view of Japanese art. It contains 23 exhibition rooms on two floors, "Highlights of Japanese Art," chronological exhibitions from 10000 B.C. to the late 19th century on the second floor, and exhibitions of each type of art, such as ceramics, and swords, thematic exhibitions and the donations gallery are on the first.