We went swimming at ... MALOU

"The Malou pond is part of the chain of ponds along the Woluwe brook in the east of Brussels. It's a designated fishing pond,shared by huge carps and a group of wild geese. At a depth of roughly one meter, you can really swim in it. The adjacent lawn between huge trees is perfectly oriented to gather the evening sun, inviting for a late sun bathing to dry after the swimming. In short, a marvellous place for an evening swim."

From "The Swimming Guide of Brussels", still to be written ...