The Top 11 Lakes in Siebengebirge
Looking to visit the best lakes in Siebengebirge? After all, there’s nothing better than the serenity of the lakeshore — or a quick dip when the weather’s warm. So, browse our list of Siebengebirge’s top lakes below as recommended by the komoot community, and experience more on your next adventure!
Last updated: December 9, 2025
View of Dornheckensee
Highlight • Viewpoint
After the completion of the Oberkassel/Ramersdorfer basalt quarrying in the 19th century, some of the up to 70 sMeter deep quarrying sites filled with groundwater. Embedded in cliffs, the Dornheckensee …
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View of the Rhine Valley from the Ennert cliffs
Highlight • Viewpoint
You couldn't see a lake
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Basalt quarry pond and cliffs on Großer Ölberg
Highlight • Natural Monument
The access was very overgrown in the summer of 2016 and therefore exciting to commit. In the end, you had to be careful not to fall out of the lake (be careful!)
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Old Quarry Pond in Naturpark Siebengebirge
Highlight • Lake
Just below the Kleiner Ölberg, a path leads towards Thomasberg. From there, you branch off from the north through a hollow path into a small, old quarry, which is filled …
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Blue Swamp (Glückliche Elise Mine Shaft)
Highlight • Structure
The 30 m deep shaft of the former "Glückliche Elise" ore mine is full to the brim with water. The strong blue color comes from copper vitriol.
2024: The edges …
2024: The edges …
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