Lakes around Unterentfelden, a municipality in the canton of Aargau, Switzerland, are primarily found in the surrounding Bezirk Aarau. While large natural lakes are not directly within its borders, the area offers accessible water features. These include unique natural swimming facilities, significant oxbow lakes, and forest ponds. The region provides diverse natural settings for exploration and recreation.
Last updated: May 31, 2026
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For me, the most beautiful natural swimming pond in the wider area. Very well maintained. Beautiful with blooming water lilies.
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Secluded and very quiet spot for observing waterfowl.
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always beautiful here. Always worth a visit
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A small footbridge leads us from one side to the other. It's lovely to stop on the footbridge and watch the flowing water.
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I drove past first. I didn't regret my return trip! A beautiful little lake, Aaschächli, hidden and quiet. A little idyll. Unfortunately, I was there at dusk, so I couldn't see much, but I could still see and, more importantly, hear the birds landing on the water, seeking nighttime shelter. A perfect place to unwind. Thank you to the creator of this highlight 😍🔝.
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In spring, there are always many frogs spawning in this pond and in a nearby pond. Therefore, drive carefully. The frogs cross the road, especially at night. Signs are posted along the way, warning cyclists to be aware of this.
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Pure relaxation for bathers🚴🏿♂️🚴🏿♂️👍👍
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A very beautiful, wonderfully located organic bathing facility.
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The most popular water features include the Biberstein Natural Swimming Pool, Switzerland's first public natural swimming pond, and Aarschächli, a significant Aare oxbow lake known for its diverse plant and animal species. Visitors also enjoy the Forest pond on the Entfelden Adventure Trail, which offers a natural setting for exploration.
Yes, several spots are great for families. The Biberstein Natural Swimming Pool features a large pool, a children's pool, and a sunbathing lawn. The Forest pond on the Entfelden Adventure Trail is part of a 2.5 km route designed for playful forest experiences, suitable for all ages. Additionally, the Aarschächli oxbow lake provides a valuable natural environment for observing wildlife, which can be an engaging activity for children.
The Aarschächli oxbow lake is a shallow, groundwater-fed habitat for numerous plant and animal species, with small fauna resurfacing after restoration. At the Biberstein Natural Swimming Pool, you might spot fish and frogs in the nearby cleaning basin. The Säliflue-Wartburg-Heideloch-Looweiher Nature Reserve also has a small pond where many frogs spawn in spring.
Yes, the Biberstein Natural Swimming Pool offers a unique swimming experience with organically cleaned water. It's Switzerland's first public natural swimming pond, providing a large pool and children's pool for relaxation and recreation.
You can find various hiking routes around Unterentfelden. For example, the Enchanted Pond – Peace Linden, Aarau loop is an easy 7.4 km hike. The Forest pond on the Entfelden Adventure Trail is part of a 2.5 km route through beautiful forest trails, designed for a fun and sensory experience. You can explore more hiking options on the Hiking around Unterentfelden guide.
Yes, the Entfelden Adventure Trail, which includes the forest pond, is easily accessible. It can be reached in 8 minutes from the WSB stop Oberdorf in Unterentfelden by following the signposting for the trail.
Yes, the Pile-dwelling settlement at Bally Park is a notable historical site. It features a small lake within Bally Park, which itself has a rich history dating back to 1868 and offers plenty of space for walks along the Aare.
The Biberstein Natural Swimming Pool provides a large swimming pool, a dedicated children's pool, a spacious sunbathing lawn, and a kiosk with a bistro for refreshments. It's designed for relaxation and recreation.
Yes, the Säliflue-Wartburg-Heideloch-Looweiher Nature Reserve is home to a small pond with informative signs describing the reserve's natural significance. It's a great spot to learn about local flora and fauna, especially during spring when frogs are spawning.
Beyond hiking, the region offers excellent opportunities for cycling. You can find various routes for road cycling and gravel biking. These routes often pass by scenic water features and through the surrounding natural landscapes.
Yes, the Entfelden Adventure Trail has two designated starting points with parking facilities: one at the sports field Schützenrain and another at the outdoor and indoor swimming pool Entfelden.
The Aarschächli is particularly noteworthy as an Aare oxbow lake. It is shallow, fed by groundwater, and serves as a vital habitat for numerous plant and animal species. After restoration efforts, a small fauna has resurfaced, making it a valuable natural environment for observation.


Still not found your perfect lake around Unterentfelden? Check out the guides of these regions to see even more beautiful places.