Parliamentary Museum, Parliamentary museum in Nagatachō, Tokyo, Japan.
The Parliamentary Museum is a building in Nagatachō, Tokyo, that presents the development of Japanese democracy through papers, images, and digital displays. Exhibition spaces offer insight into how both chambers of the National Diet work and the constitutional foundations of the country.
The building opened in March 1972 on the occasion of the 80th anniversary of parliamentarism in Japan. Its establishment marked a commitment to preserve and pass on the memory of constitutional government.
The name reflects its mission to make parliamentary history accessible to visitors of all ages. School groups often visit the rooms here to learn more about lawmaking and their own role as citizens.
The entrance is located in Diet Front Park and is open daily from 9:30 AM to 5:00 PM, with no admission fee. Information is offered in several languages, making it easier to find your way around.
In one area, visitors can reenact the flow of a parliamentary session and make decisions themselves. These simulations show how laws come into being and what steps are needed before a draft is adopted.
Location: Nagatachō
Inception: 1970
Official opening: March 1972
Opening Hours: Monday-Sunday 09:30-17:00
Phone: 0335811651
Website: http://shugiin.go.jp/internet/itdb_annai.nsf/html/statics/kensei/kensei.htm
GPS coordinates: 35.67833,139.74700
Latest update: December 5, 2025 22:30
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