Swimming allowed
4 places in Cologne
Bleibtreusee
Man-made lake from former lignite mining in the Ville, now a popular spot for water skiing, surfing and swimming.
Heider Bergsee
A reclaimed open-cast coal mining pit turned swimming lake near Brühl — 35 hectares of still water in the Rhineland Nature Park, with a beach resort.
Liblarer See
Artificial swimming lake in a former open-cast lignite pit — one of the largest lakes on the Villeseenplatte and a popular summer destination near Cologne.



