National Museum of Territory and Sovereignty, National museum in Toranomon district, Tokyo, Japan.
The National Museum of Territory and Sovereignty is a national museum on the first floor of the Toranomon Mitsui Building in the Toranomon district of Tokyo. It displays maps, historical documents, and information panels related to Japan's geographic areas and their borders.
The museum opened in January 2018 and moved to the Toranomon Mitsui Building two years later. The new location provided more space, which allowed the collection to grow.
The exhibits are labeled in Japanese and English, making the museum accessible to international visitors. Some of the maps on display come from foreign archives and show how other countries historically depicted Japan's borders.
The museum is free to enter and easy to reach by subway, with several stations nearby. Visiting on a weekday means fewer people around, giving you more time in front of each exhibit.
Some of the maps on display were produced by foreign governments in past centuries and show Japan from an external point of view. These documents were not held in Japanese archives but were preserved by other countries and made available to the museum.
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