Iya Valley

Iya Valley is one of Japan's Three Hidden Valleys, a mountain valley located deep in the heart of Shikoku island. The vine bridges are one of the main attractions, used once to cross the river, and you can explore and cross through this bridges, although I won't recommend it if you have a fear of heights. This is a great place for hiking, specially at the easter end, with many trails of different lengths and mapped out.