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    The scale of the underground space is truly impressive. The lighting against the stone walls creates such a mysterious atmosphere.

    Oya History Museum is especially comfortable to visit in the summer. It stays cool inside year-round, and walking through the spacious underground area feels wonderfully refreshing.

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    The underground cavern is huge, and the artistic lighting makes it feel like you're in an underground palace.

Hokkaido Tohoku Kanto Chubu Hokuriku Kansai Chugoku Shikoku Kyushu Okinawa