Houses of Parliament (The House of Councilors)


Houses of Parliament (The House of Councilors)

The National Diet Building is the center of law-making in Japan. Visitors can tour the building and observe the creativity and originality that were poured into the design of the building, including its stained glass windows and ceilings.

The National Diet Building was built in 1936, and after the 70th Imperial Diet Convention was held in the building on December 24 of the same year, it started to be used as a conference hall by the Diet members. Since then, the law-making politics in Japan has centered around this place. The building has 3 floors above ground and 1 floor underground. The windows and ceilings of the central hall and the House of Councilors hall are mounted with stained glass and are elaborately made. There are also many areas that draw attention to the particular details of the construction, such as the mosaic floors that were created from more than 10 different kinds of marble stones and the oil paintings of the four seasons. The value of the building itself is also high. The 460 seats in the House of Councilors hall are arranged in a semi-circular pattern, and, in principle, people are free to observe, on a ”first come, first serve” basis, any plenary session that is held there, provided that they have admission tickets. Anyone can visit the building on weekdays. However, an advance booking is required for group visits of 10 or more people. The National Diet Building is a 3-minute walk from the Exit No. 1 of Subway Nagatacho Station or a 6-minute walk from the Exit No. 1 of Subway Kokkai-Gijidomae Station.


  • Address

    1-7-1, Nagatacho, Chiyoda-ku, Tokyo, 100-0014

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  • Nearest Station
    Nagatacho Station
    ・ Tokyo Metro Yurakucho Line
    ・ Tokyo Metro Hanzomon Line
    ・ Tokyo Metro Namboku Line
    Exit 1
    3 minutes on foot
  • Phone Number


    Our staff may only be able to communicate in Japanese.


  • Hours
    Weekdays 9:00am - 4:00pm
    Every hour on the hour (9:00 a.m., 10:00 a.m., 11:00 a.m., noon, 1:00 p.m., 2:00 p.m., 3:00 p.m., 4:00 p.m.); Sundays: first and third Sundays after the closure of Diet (10:00 a.m. to 3:00 p.m.)
  • Closed
    Opens 1st and 3rd Sunday after the closure of the Diet; closes New Year's holiday