Uzu no Michi is a 450-meter marine promenade beneath the roadway of the Onaruto Bridge. From an observation room approximately 45 meters above the sea and glass floor panels, visitors can watch the powerful currents and whirlpools of the Naruto Strait. Exhibits explain the tides and formation of the ...

Ryugado Cave is one of Japan’s leading limestone caves, formed over approximately 175 million years. Along the roughly one-kilometer visitor route, see a remarkable variety of stalactites and stalagmites, Yayoi-period habitation remains, and rare pottery encased in calcite. An advance-reservation Adv...