The Aasee is an artificial lake in Bocholt. It serves as a local recreation area and serves as flood protection for the surrounding area. You can make a 3 km circular walk around the lake. Most interesting part is around the bird island on the west side of the lake. Among the birds you can see are Common Sandpiper, Tufted Duck, Great Crested Grebe, Sand Martin, Common Swift, Eurasian Oystercatcher.
Easy to reach from the city of Bocholt.