Best lakes around Hundelshausen are found in a region characterized by its natural landscapes within the Geo-Naturpark Frau-Holle-Land. The area features the notable Grüner See, a swimming lake formed from an abandoned gypsum quarry, known for its distinctive green color. This lake is situated near the northeastern edge of Hundelshausen, partially surrounded by forested slopes. The region offers various natural features, including sunbathing lawns and access to the Gelster river.
Last updated: May 15, 2026
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A beautiful viewing platform with a direct view of the pond.
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The view of the Tretzendorfer Weiher landscape is wonderful.
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But many other animals and plants can also be discovered here. The newly created habitats in former gravel pits are now populated. Frogs and dragonflies cavort in the waters. In summer you can find numerous butterflies on the floodplain meadows. There are also rarer species such as the dark-breasted bluebird, whose caterpillars develop in ant nests. Cycle paths, a lookout tower and an adventure trail with numerous information points invite you to visit the Mainaue all year round. https://www.naturerlebnis.bayern.de/vergleich_bayernentdecker/20_ufr_mainaue.htm
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The “Mainaue bei Augsfeld” nature reserve is an important European breeding area for native bird species and a resting area for migratory birds. Rare and typical floodplain habitats and animal species of European importance are also still widespread in the area. Natural, nutrient-rich lakes have formed in the area of former river loops, which were separated by the dynamics of the river. But such contrasting habitats as fens and dry sandy grasslands can also be found alongside riparian forests and meadows. Bird species such as the sandpiper, little ringed plover and the great egret feel at home in this varied area. An adventure trail enables ideal observation of this rich bird world. An observation hill and additional shelters hidden near the bank make undisturbed observation easier. https://www.naturerlebnis.bayern.de/vergleich_bayernentdecker/20_ufr_mainaue.htm
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One of several great observation towers along the Main floodplains, which provide beautiful views of flora and fauna along the Maine and its magnificent lake landscape.
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Part of the circular route can be cycled and offers a lot of information along the way as well as a viewing platform, it's worth it.
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At 10 hands-on stations along the approximately 2 km long circular route, he introduces the diverse animal world in the habitats of the Tretzendorfer Weiher and the nature reserve of the same name. By actively puzzling, touching, searching and listening, you can get to know the different inhabitants of the forest, meadow and water along the path. The Tretzendorfer Weiher adventure trail is a cooperation project between the Steigerwald Nature Park, the municipality of Oberaurach, the Oberschleichach Environmental Education Center and the State Association for Bird Protection. The Aurach valley section between Unterschleichach and Tretzendorf was designated a nature reserve in 1993 with a size of 201 hectares. Because in the special habitat types that occur here, numerous animal and plant species still find an attractive home. Source: https://www.hassberge-tourismus.de/detail/id=60375cf8bca4755fc5e4fa3f
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Enjoy pure nature, the tranquility of the lake, a bench invites you to linger. Just beautiful.
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The Grüner See is unique due to its origin as an abandoned gypsum quarry that filled with groundwater, precipitation, and surface water. Its distinctive green color comes from its richness in phytoplankton. It serves as a natural swimming lake, especially popular in summer.
Yes, the Birdwatching Tower Mainaue bei Augsfeld offers excellent opportunities to observe various bird species throughout the seasons, with views of the Großer Wörth, Landwehrgraben, and Sichelsee. The Neuer See Gerolzhofen also provides good breeding conditions for rare bird species due to its wide reed belt.
At Grüner See, you'll find Liegewiesen (sunbathing lawns) offering both sunny and shady spots for relaxation. During summer days, a kiosk is available for refreshments like ice cream and drinks. Parking lots are also conveniently located not far from the lake.
Absolutely. The Tretzendorfer Weiher Observation Platform is family-friendly, featuring a circular route with hands-on stations about the local animal world. The Ponds in the Handthal Valley are also suitable for families, offering a chance to explore a wetland habitat amidst a dense beech forest.
The region offers a variety of outdoor activities. You can find numerous running trails, including moderate and difficult options like the 'Oberschwappach Vineyard Garden loop'. For mountain biking enthusiasts, there are MTB trails such as the 'Eberhardt E3 Trail Start Point' routes. Additionally, easy hiking trails are available, like the 'Zabelstein Viewing Tower – Zabelstein Castle Ruins loop'. You can explore more options on the Running Trails around Hundelshausen, MTB Trails around Hundelshausen, and Easy hikes around Hundelshausen guide pages.
Grüner See is a natural swimming lake, especially inviting during summer. However, it's important to note that swimming is at your own risk as it is not monitored by the DLRG (German Life Saving Association).
Yes, the Tretzendorfer Weiher Observation Platform offers an idyllic, shady vantage point and rest area. The Tretzendorf Ponds also provide great views, inviting visitors to linger and dream.
The Grüner See is particularly appealing during the summer months when it serves as a natural swimming lake, perfect for bathing and relaxation. The kiosk also operates during summer days.
Dogs are generally not permitted in the designated swimming area of Grüner See. While some sources suggest they might be allowed around the lake itself, it's always best to verify local regulations upon arrival.
The lakes are situated within the Geo-Naturpark Frau-Holle-Land, offering diverse natural features. You'll find forested areas, sunbathing lawns, and the Gelster river flowing nearby. The Ponds in the Handthal Valley are surrounded by dense beech forests, and the Neuer See Gerolzhofen features a wide reed belt, creating important habitats for various species.
There is a narrow path around Grüner See, but some sections might be challenging or dangerous. Visitors should exercise caution when exploring the perimeter.


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