Nishiyama Onsen Keiunkan Nishiyama Onsen Keiunkan Nishiyama Onsen Keiunkan (西山温泉慶雲館) is a hot spring hotel in Hayakawa, Yamanashi Prefecture, Japan. Founded in 705 AD by Fujiwara Mahito, it is the oldest hotel and one of the oldest companies in operation. In 2011, the hotel was officially recognised by the Guinness World Records as the oldest hotel in the world. It has been continuously operated by 52 generations of the same family (including adopted heirs) for over 1,300 years. The Keiunkan lies at the foot of the Akaishi Mountains. Since its foundation the hotel has had all its hot water sourced directly from the
Takanoyu Onsen the onsen its eponymous name. The onsens in Akinomiya were officially recognized by the Akita Clan in the Edo period (1603–1868). The various hot springs in the immediate area are referred to as the Akinomiya Geothermal Area and are situated along the western base of Mount Kurikoma. Takanoyu Onsen has its own hot spring, which wells up directly adjacent to the inn on the east bank of the Yakunai River. The water temperature at the spring source is 72 °C (162 °F). Only about ten percent of all hot spring facilities in Japan have water flowing directly from their own