Hida, in Gifu Pref., is nestled deep in the mountains near the Japan Alps. This remote yet refined city is renowned for its master carpenters who use ancient techniques to construct sturdy buildings, without a single nail. Our reporter experiences these kumiki joinery methods. He also discovers the untouched beauty of rural Japan by bike, gets a peek at country life, and cycles along a discontinued rail line. Also, we get tips on creating delicious bento at depachika, department store basements. Reporter: Daniel Leung