The original Japanese Gallery (designed by the British architect Josiah Conder) was severely damaged in the Great Kanto Earthquake of 1923. In contrast to western style of the original structure, 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. 24 exhibition rooms on two floors provide a thorough introduction into Japanese art: "Highlights of Japanese Art" on the second floor introduces the development of Japanese art from Jomon through to the Edo period in a chronological manner, and genre galleries presenting specific rooms displaying ceramics, swords, lacquerwares, sculptures, modern decorative arts as well as the material culture of Ainu and Ryukyu are located on the first floor.