TOKYO -- Overseas tourists in Japan are venturing further afield these days in search of unique experiences.
Nine heritage sites reveal the secrets of the nation's economic success

The Besshi Copper Mine’s No. 4 Adit was the mine's main transport artery. It was about 10 km long and trolleys ran along the tunnel and the connecting Yontsukyo Bridge. (Photo by Masamichi Hoshi)
TOKYO -- Overseas tourists in Japan are venturing further afield these days in search of unique experiences.