Summer is coming fast and furious, and with it comes a host of festivities. Blue skies, the great outdoors, getaways, sunsets, drinks on the terrace that stretch into the evening…and with the heat, there’s nothing better than taking a dip in the open air—no matter how hard you look, it’s hard to find a better spot. After recently telling you about Île Chambod and Lac de Nantua, this time we’re heading to Lac des Sapins and its 8,000 m² of naturally filtered water— the largest in Europe.
Lac des Sapins, Europe’s largest natural swimming area

“It doesn’t take much to be happy,” said Baloo in The Jungle Book, and to live on fresh water and greenery. When you visit Lac des Sapins, those words really come to life! A lake, one of the cleanest in the world, set in a lush green setting, not far from the Azergues Valley in the Beaujolais region. Even though, in size, Lac des Sapins is no match for either Lac du Bourget or Lacd’Aiguebelette, it remains a gem on a European scale.
What exactly is a natural swimming area? Thanks to the preserved natural environment, the lake’s water regulates and purifies itself. In practical terms, the aquatic plants and microorganisms—which act as a giant natural filter—work at full capacity 24/7. Nature really is a marvel.
As for other activities, you’ll be spoiled for choice. Canoeing, paddleboarding, biking, and even fishing! For the laziest among you, you can simply spread out a picnic blanket and end up taking one of those naps where you can feel the earth pushing against your back…
To take a dip, there are two options:
- Natural swimming (paid and limited access): swim in the great outdoors, surrounded by flora and fauna, where the water is naturally filtered by some 8,000 aquatic plants. Please note: swim shorts are not allowed at this swimming area.
- The designated swimming area: here, access is free, and you can also count on lifeguards to keep an eye on things. But don’t forget that keeping a close watch on your loved ones—especially children—is the most important thing of all.
Lac des Sapins is a natural environment unique in Europe, and the department is doing everything possible to preserve the area’s biodiversity and ensure a welcoming experience for visitors. Its preservation also depends on each and every one of us.