Some people can’t resist the beach in the summer, while others prefer the pool or a lake…. but have you ever tried swimming in one of the natural lakes in Trentino-Alto Adige? Bio-lakes are natural pools where the water is purified through natural filtration systems: plants, algae, gravel, small fish… no chlorine or other chemicals, just crystal-clear water—and, surprisingly, it’s even relatively warm! If you’re on vacation in the mountains, they’re a great alternative to outdoor pools for those days when you’re in the mood for the beach! These are very well-maintained and organized facilities, where you’ll also find pleasant green spaces and amenities to spend a relaxing day for you and a fun-filled one for the kids.
Here’s where to find the bio-lakes in Trentino-Alto Adige
Biolakes in Trentino
Predazzo Bio-Lake
A beautiful little lake located just outside the village of Predazzo, next to the bike path, the sports field, and the skate park. It’s also easily accessible by car and has several parking lots. Here you’ll find restrooms, changing rooms, and a nice little bar with outdoor seating—perfect for a casual lunch, an aperitif, or a snack. The lake is surrounded by a large garden where you can rent lounge chairs as well as stand-up paddleboards (SUPs) to enjoy the water in a different way than usual. Open from June 7 to September 7. We wrote about it in “A Great Summer at Biolago in Predazzo”
Pinzolo Biological Lake
Just a stone’s throw from downtown lies the Pinzolo Bio-Lake area, a small lake with a natural filtration system that will surprise you with the temperature of its waters—cool but never cold. The delicate balance between the flora that purifies the water and the lake itself ensures that swimming here is always a pleasure. The water lilies are beautiful, and there are piers where you can relax. Here, too, you can rent lounge chairs and umbrellas, and restroom facilities are available. Open from early June to mid-September. We’ve written about it here: Relaxation at the Biolago di Pinzolo
Castel Tesino Bio-Lake
This natural lake was built in 2021 in Castello Tesino. It is located in the multi-purpose sports area, which also features a children’s playground, and has a swimming area of 700 square meters. The pond reaches a maximum depth of 1.40 meters, but the facility also includes a children’s pool with a maximum depth of 70 centimeters. The water, which is naturally filtered and purified, maintains a pleasant temperature and has a low bacterial count, allowing it to integrate seamlessly into the surrounding ecosystem. Open from late June through late August. Find all the details here: At the Castello Tesino Bio-Lake
Biolakes in South Tyrol
Gargazzone Natural Pool
The natural swimming pool in Gargazzone is surrounded by a large green space with various trees, picnic tables, playground equipment, soccer and beach volleyball fields, table tennis, and indoor soccer. The natural stream and the toddlers’ pool—with a maximum depth of 30 cm—are particularly suitable for young children.
The facility also features several pools of varying depths, comfortable family changing rooms, a farm animal area, and a snack bar. The water is purified by plants in the adjacent filtration pools, where you can also easily spot dragonflies. We discuss it here: Natural Swimming Pool in Gargazzone
Natural Lake in Dobbiaco
If you’re looking for a place to relax with a view of the mountains of the Val di Landro, the natural lake in Dobbiaco is the perfect spot for you. It’s located in the Gries area of Dobbiaco and is also ideal for sports enthusiasts: in addition to the synthetic soccer field, major sporting events are broadcast on the big screen ! There are also changing rooms, restrooms, a bar, a restaurant/pizzeria, and a large terrace for sunbathing. More info HERE
Corvara Biotope Lake
Three small lakes, a lawn with showers, a bar with a restaurant, and a children’s playground . The ponds are divided into a main pond, a children’s pool, and a regeneration pond. The pond is purified mechanically, but primarily biologically, thanks to specific plants and materials. Umbrellas and lounge chairs are available for rent, and there’s a stunning view of the surrounding mountains. Info HERE
There’s more than just bio-lakes in Trentino-Alto Adige…
Admit it—you didn’t know about all the bio-lakes in Trentino-Alto Adige! But maybe you know these: