Historic Site Sado Kinzan
(Source : ドラマル / PIXTA(ピクスタ) )
Situated in Niigata, Historic Site Sado Kinzan is Japan's biggest gold mine recognized as a national historic site. Since many important remains stay intact, it is also registered on the Tentative List of World Heritage Sites in 2010. Founded in 1601, a huge amount of gold has been mined during the Edo period here. After all the resources ran out in 1989, the mine was opened to the public as a historic site. In the approx. 400 km long tunnel, there is a tourist route where you can observe remains of the gold industry at a close distance.