Sompasauna, 00540 Helsinki

Sompasauna is a woodheated self-service public sauna, built and maintained by a group of volunteers in Helsinki. Visitors enjoy the sauna and swim in the sea at their own risk; there is no lifeguard or staff on-site. The sauna is open around the clock and free for everyone to use.

60° 10' 32'' N,  24° 58' 32'' E