Matsushiro Underground Imperial Headquarters

Free Admission
Unrestricted by Weather

The Matsushiro Zozan Underground Vault in Matsushiro-machi, Nagano City, is a huge underground bunker that was excavated as part of a covert plan to move government ministries, the army, and the Imperial headquarters from Tokyo to Matsushiro in order to prepare for decisive mainland battles during the end of the Second World War. Dug out like the intersections on a Go board game with Mt. Maizuruyama at the center and extending out to Mt. Minakamiyama and Mt. Zozan, about 80% of the project was completed, but the war came to an end and construction was stopped. In 1989, it was outfitted with tourist facilities, and currently one part of the approximately 10-kilometer-long cavern is open to the public as a historic wartime relic.

Photograph provided by Nagano Convention & Visitors Bureau

0.5 Hours
Telephone Number
Postal code
479-11 Matsushiro-machi Nishijo, Nagano City, Nagano
長野県長野市松代町西条479-11 松代象山地下壕
Recommended season
April, May, June, July, August, September, January, February, March, October, November, December
Business Hours
Monday・Tuesday・Wednesday・Thursday・Friday・Saturday・Sunday : 09:00~16:00

No advance reservations are required.
Final admission 30 minutes before closing.

Closed: third Tuesday of each month (or the following day if it is a national holiday), and New Year period (December 29th-January 3rd). 
*Business hours are subject to change due to maintenance. Please confirm before visiting.

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