The Spree River in Berlin, Germany, is too polluted to swim in.
Unfortunate, really.
So, how to cool hundreds of summer-warmed Berliners?
By turning an old barge into a pool, of course!
The Badeschiff (German for "bathing ship") is a floating pool located within the river itself.
Brilliant.
In winter, it becomes a sauna and a steam bath.
Super brilliant.
xo
