Saunas are present in every village, save those built with kotas. They are small (usually no bigger than 2x3) buildings, and always include a fireplace, a table, a sauna scoop and a wooden tub. One part of the Advanced adventures course needs you to use a sauna. To do so, light a fire in the fireplace, remove all your clothing, then with a container of water in your inventory, [a]pply the sauna scoop.
It is possible to build a sauna in your home
by stealing a tub and scoop from a village. Sauna scoops and tubs are available for purchase in goods sheds.
Saunas make good player homes. All that is needed is to block up the entrance with a fence, so that only the player has access inside.* Saunas can also function as smokehouses. A hot sauna session may be an effective treatment for influenza.
- Seems to not work anymore, NPC's climb over the fence:
■ Vendayn -More testing may be required, but I've only seen children climb over fences. Not the adults of the village.
■ At version 3.14 adults can climb fences.(only if you attack the NPC's)