| National Diet Building | |
|---|---|
国会議事堂 | |
 Front view of the building in 2019 | |
 | |
| Alternative names | Imperial Parliament Building |
| Record height | |
| Tallest in Japan from 1936 to 1964[I] | |
| Preceded by | Five-storied pagoda in Tō-ji, Kyoto |
| Surpassed by | Hotel New Otani Tokyo |
| General information | |
| Architectural style | Art Deco |
| Address | Nagatachō, Chiyoda, Tokyo |
| Country | Japan |
| Coordinates | 35°40′33″N 139°44′41″E / 35.67583°N 139.74472°E |
| Construction started | 30 January 1920 (Taishō 9) |
| Completed | 7 November 1936 (Showa 11) |
| Owner | Government of Japan |
| Governing body | National Diet of Japan |
| Height | Both wings 20.91 m (68.6 ft) Central tower 65.45 m (214.7 ft) |
| Technical details | |
| Floor count | 3 floors above ground, 1 floor below ground, 4 floors of central tower (9 floors at the top of the tower) |
| Design and construction | |
| Architect(s) | Ministry of Finance Temporary House Building Bureau |
| Other information | |
| Public transit access | Kokkai-gijidō-mae Station Nagatachō Station |
The National Diet Building (国会議事堂, Kokkai-gijidō) is the building where both houses of the National Diet of Japan meet. It is located at Nagatachō 1-chome 7–1, Chiyoda, Tokyo.
Sessions of the House of Representatives take place in the south wing and sessions of the House of Councillors in the north wing.
The Diet Building was completed in 1936 and is constructed entirely of Japanese materials, with the exception of the stained glass, door locks, and pneumatic tube system.