Hot Lake SanitoriumEstablished in 1917 in Hot Lake, OR. Hot Lake Hotel (also known as Hot Lake Resort) is a historic Colonial Revival hotel originally built in 1864 in Hot Lake, Union County, Oregon, United States.[3][4] The hotel received its namesake from the thermal spring lakes on the property, and operated as a luxury resort and sanitorium during the turn of the century, advertising the medicinal attributes of the mineral water and drawing visitors worldwide. It is also the first known commercial building in the world to utilize geothermal energy as its primary heat source.
After a fire burned down over half of the hotel in 1934, the remaining building was used for various purposes, including a retirement home, asylum, and a nurse's training school during World War II. After that, operations were intermittent under various owners before the building's abandonment in 1991. The hotel and surrounding structures were added to the National Register of Historic Places in 1979.[2]
Today, it is operated as a bed and breakfast, museum, and spa. Prior owners included future governor Walter M. Pierce and former state senator Parish L. Willis.[6]