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Komoro Castle

小諸城Nagano

Historic area

What makes this place special?

At a Glance

Komoro Castle is a castle ruin in the city of Komoro, Nagano Prefecture, now open to the public as the park Kaikoen. It was built on ground lower than the town around it, which gave it the nickname Ana-jo, the sunken castle, and the deep valleys of the Asama foothills serve as dry moats. The castle was completed in 1554 and laid out in its present form under Takeda Shingen, and Sengoku Hidehisa rebuilt it with stone walls after 1590.

The three-story keep burned down after a lightning strike in 1626 and was never rebuilt. Only two gates remain, the Sannomon at the park entrance and the Ōtemon in the town, both Important Cultural Properties. Inside the park are a zoo, the Shimazaki Toson Memorial Hall and many cherry trees that make it one of Japan's 100 cherry blossom spots, also known for autumn foliage. Komoro Castle was selected as one of the 100 Fine Castles of Japan in 2006.

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How do I visit?

Visit Duration

90 minutes

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