This reservoir, built in the 1930s, quickly became a popular spot for recreation in Essen - swimming, yachting or just unwinding.
Wikipedia (German) http://de.wikipedia.org/wiki/Baldeneysee
Official Website http://www.baldeneysee.de/
Address 206a Freiherr-vom-Stein-Straße, 45133, Germany
Coordinates 51°24'10.066" N 7°0'26.485" E