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Nordwestschweiz
Aargau
Bezirk Aarau

Biberstein

Top 20 Lakes around Biberstein

Best lakes around Biberstein offers a diverse range of aquatic experiences, from unique natural swimming pools to serene oxbow lakes. Located in the canton of Aargau, the region is characterized by its proximity to the Aare river and its picturesque natural settings. While traditional large natural lakes are not directly within Biberstein, the area provides distinct water features for recreation and nature observation.

Best lakes around Biberstein

  • The most popular lakes is Fünfweiher, a lake that offers relaxation potential for the whole family with beautiful ponds and many shady spots. It is a suitable location for picnics and barbecues.
  • Another must-see spot is Biberstein Natural Swimming Pool, an other man-made facility. This is Switzerland's first public natural swimming pond, opened in 2000, where visitors can experience "green water" and potentially observe fish and frogs in a nearby cleaning basin.
  • Visitors also love Aarschächli, a lake that is an Aare oxbow lake. This shallow lake is fed by groundwater and serves as a habitat for various plant and animal species.
  • Biberstein is known for natural ponds, unique swimming pools, and oxbow lakes. The area offers a variety of water features to see and explore, catering to different interests.
  • The lakes around Biberstein are appreciated by the komoot community, with over 350 upvotes and 180 photos shared across the highlights.

Last updated: June 28, 2026

Fünfweiher

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short break for a sandwich

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Biberstein Natural Swimming Pool

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The first public swimming pond in Switzerland was opened in 2000, which is also the first organic swimming pool in Switzerland. At Biberstein, it is worth jumping into the green water: with a little luck, you will spot fish and frogs in the nearby cleaning basin. A large pool, a children's pool and the lawn for sunbathing invite you to relax and linger. The Biobadi also has a kiosk with a bistro so that the stomach stays relaxed.

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Fünfweiher Pond

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Popular excursion destination with barbecue area and old bell tower

The Fünfweiher, which still exists today, is located in the mountain forest south of Lenzburg. Its name and a map from the end of the 19th century still indicate that there were once five ponds in this area. The ponds were built in tiers along the mountain valley rising to the south. Of the ponds, only the Fünfweiher remains; all the other ponds have silted up in recent decades and can only be vaguely seen in the forest.

Today, the Fünfweiher in the mountain forest near the city with its beautiful and well-equipped barbecue areas is a popular excursion destination in a picturesque setting. Here, young and old can discover and experience nature directly.

(Source: lenzburg.ch)

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Aarschächli

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The Aarschächli is particularly worth seeing: the Aare oxbow lake is a shallow lake fed by groundwater and a habitat for many plant and animal species.

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Small Pond

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A very pretty, privately-created pond with fish in it. A really nice place to take a break.

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Popular around Biberstein

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Tips from the Community

Me Li 🇨🇭
June 1, 2026, Bio Badi Biberstein

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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The Fünfweiher is popularly called Feufweier. It was created in the 16th century for fish farming and irrigating the lower meadows. Later, it served as a fire-fighting water reservoir for the city of Lenzburg. In May, entire schools of tadpoles frolic beneath its surface. We have never seen such a high population of tadpoles in our lives. The pond offers the opportunity for barbecues and picnics.

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always beautiful here. Always worth a visit

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Me Li 🇨🇭
January 21, 2026, Aarschächli

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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Me Li 🇨🇭
September 15, 2025, Aarschächli

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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Pure relaxation for bathers🚴🏿‍♂️🚴🏿‍♂️👍👍

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A very beautiful, wonderfully located organic bathing facility.

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Frequently Asked Questions

What kind of water features can I expect to find around Biberstein?

Around Biberstein, you'll discover a diverse range of aquatic experiences, including unique natural swimming pools, serene oxbow lakes, and natural ponds. While large traditional natural lakes are not directly within Biberstein, the area offers distinct water features for recreation and nature observation, often linked to the Aare river.

Are there any unique swimming spots near Biberstein?

Yes, the Biberstein Natural Swimming Pool is a unique highlight. It's Switzerland's first public natural swimming pond, opened in 2000, offering a distinctive experience with 'green water' where you might spot fish and frogs in a nearby cleaning basin. It features a large pool, a children's pool, and a sunbathing lawn.

Are there family-friendly lakes or water features in Biberstein?

Absolutely. Many spots are ideal for families. Fünfweiher offers relaxation potential for the whole family with beautiful ponds and shady spots for picnics and barbecues. The Biberstein Natural Swimming Pool is also very family-friendly with a children's pool and sunbathing areas. The Forest pond on the Entfelden Adventure Trail provides a playful forest experience suitable for all ages.

What natural features can I observe around the lakes?

The Aarschächli, an Aare oxbow lake, is particularly worth seeing as a shallow, groundwater-fed lake that serves as a habitat for various plant and animal species. At the Biberstein Natural Swimming Pool, you might even spot fish and frogs in the cleaning basin, highlighting its ecological approach.

What do visitors enjoy most about the lakes around Biberstein?

Visitors appreciate the relaxation potential, especially at Fünfweiher with its beautiful ponds and shady picnic spots. The Biberstein Natural Swimming Pool is praised for its clean, family-friendly complex and unique organic swimming experience. The area's water features have garnered over 350 upvotes and 180 photos from the komoot community.

Are there hiking trails near these lakes?

Yes, you can find hiking opportunities near the lakes. For instance, the Forest pond on the Entfelden Adventure Trail is part of a 2.5 km route designed for a fun and playful forest walk. For more general hiking options in the region, you can explore the Running Trails around Biberstein guide, which includes routes like the 'Biberstein – New Bridge over the Aare loop'.

Can I cycle near the lakes around Biberstein?

Yes, the area offers various cycling routes. You can find options for both mountain biking and touring. Check out the MTB Trails around Biberstein guide or the Cycling around Biberstein guide for routes that may pass near some of the water features, such as the 'Aare Riverside Cycle Path'.

Are there places for picnics or barbecues near the lakes?

Yes, Fünfweiher is specifically mentioned as a suitable location for picnics and barbecues, offering many shady spots for visitors to relax and enjoy their meals.

What is the best time to visit the lakes around Biberstein?

The best time to visit depends on your activity. For swimming at the Biberstein Natural Swimming Pool, the warmer months are ideal. For exploring the natural ponds and oxbow lakes, spring and autumn offer pleasant temperatures for walks and observing nature. The Entfelden Adventure Trail is accessible in every season.

Are there any hidden gem lakes or ponds near Biberstein?

The Small Pond is a lovely, privately-created pond with fish, described as a beautifully landscaped nature reserve and a really nice place to take a break. It offers a serene and well-maintained spot away from larger crowds.

What facilities are available at the Biberstein Natural Swimming Pool?

The Biberstein Natural Swimming Pool provides a large swimming pool, a dedicated children's pool, and a spacious lawn for sunbathing. There is also a kiosk with a bistro available for refreshments, making it a comfortable place to spend the day.

What is the 'Aarschächli' and why is it significant?

The Aarschächli is an Aare oxbow lake, meaning it's a shallow lake formed in a former meander of the Aare river. It's significant because it's fed by groundwater and serves as an important habitat for various plant and animal species, making it a valuable natural monument in the region.

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