Recommendation by Lemi
On the banks of the Gulf of Finland in Sompasaari lies Sompasauna, a self-service public sauna maintained by local volunteers. Two newly-built wood-heated saunas stand on the property, both decked in quirky, colorful designs (pro tip: the smaller hut is hotter). Do as the Fins do, and bare it all before stepping into the steamy rooms. Remember to bring your own towels! Feel free to take a dip into the sea after your session, but do it at your own risk—there are no staff (or lifeguards) on site!