Nisiyama Onsen Keiunkan is a hot spring hotel in Japan that opened in 705 and has been running ever since! It is said that it has had 52 operators since it opened. That would be an average of just over 25 years of service per operator. Looks like a gorgeous little place to visit!
Nisiyama Onsen Keiunkan holds the Guiness Book of Records title for oldest hotel and oldest company still operating.