Saturday, June 8, 2024


Rantasauna is a legendary party place in Otaniemi, in the student village of the Helsinki University of Technology (now called Aalto University).

There's a sauna... another sauna... a kitchen and a big meeting place. And some outdoor terrace, including a massive hot barrel tub.

I have not swam here often, but a few times. Now with Otadata, my old student club focusing on computer science we had another visit. And I went for the swim. Not sure I've ever swam in the sea in Finland when it was this warm, and it was only June 3rd!

The official page for the Rantasauna is here.

For more sauna and swimming stories, check out and websites! Read more urban exploration stories from, and other underground stories from Read the full Planetskier series at, or all blog articles from Blogspot or TGR. Photos and text (c) 2024 by Jari Arkko. All rights reserved.  I never photograph pools, beaches or saunas unless the facility is closed or empty.

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