Nishiyama Onsen Keiunkan
Nishiyama Onsen Keiunkan (西山温泉慶雲館 Nishiyama onsen keiunkan?) is a hot spring hotel in Hayakawa, Yamanashi Prefecture, Japan. Founded in 705AD, it is the oldest hotel and oldest company still in operation according to the Guinness World Records. The hotel has had 52 generations of the same family operating it since its founding. 
- List of oldest companies – for several hundred notably old companies.
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