Welcome to Koshu Nishiyama Hot Spring, Keiunkan - an inn with free-flowing hot springs with 1300 years of history. The history of the Keiunkan inn dates back 1300 years to the year 705AD (the 2nd year of the Keiun era), when Fujiwara Mahito founded the inn. Because it was founded in the Keiun era, the inn was thus named Keiunkan. The hot spring has flowed freely without interruption since then and is loved by many townsfolk, military commanders and cultured peoples as a secluded place deep in the mountains of the Kai region. Keiunkan, to this day, still embodies the unchanging hospitality of the heart of Japanese harmony for all of our guests. In the Guinness World Records, Keiunkan is certified as the world's most historical inn. — World's Longest-Standing Inn Founded in 705AD— History of Keiunkan The Nishiyama Hot Spring, Keiunkan is said to have had many townsfolk and military commanders of the warring period visiting it. Amidst the unification of Japan after the warring period, it is said that Tokugawa Ieyasu visited twice. Later, it was called the secret hot spring of Takeda Shingen and Tokugawa Ieyasu. No matter how much time has passed, Keiunkan embodies the unchanging hospitality fueled by the spirit of Japanese harmony towards our guests. Same Prefecture as World Heritage Site 'Mt. Fuji' Keiunkan is located in Yamanashi Prefecture, the same prefecture as the World Heritage-listed Mt. Fuji, so perhaps you can view the grand sight of Japan's greatest sacred mountain, Mt. Fuji, while you make your way to the world's longest-standing inn, Keiunkan. *Mt. Fuji is not viewable from our facilities. Hot Springs We bring you a moment of bliss with a luxurious bath with the free-flowing hot spring. Keiunkan has four open-air baths and two indoor baths for a total of six baths. There are four different sources of the natural hot spring, and the water has the properties of sodium, calcium nitrate and chloride spring (low alkaline properties) and is sourced from the chasm of the Earth, Fossa Magna, cultivated over eons of time. Please enjoy the hot springs; we also have a terrace setting for you to enjoy the view of the Yukawa ravine afterwards.