Barberg–Selvälä–Salmonson Sauna - Credit: Wikimedia Commons
The Barberg–Selvälä–Salmonson Sauna is a historic Finnish sauna in Cokato Township, Minnesota, United States. Built in 1868, it is believed to be the state's and probably the nation's oldest surviving savusauna (smoke sauna). Moved on several occasions throughout its history, the sauna now stands with other historical Finnish American structures in a rural park. Read more on Wikipedia
Source: en.wikipedia.org