The Wienerwaldsee is a shallow reservoir, located 20 kilometres west of Vienna, Austria.
It is located just north of Austria's main motorway, the West Autobahn, between Tullnerbach and Neu-Purkersdorf. It was created over three years, 1895–1897, by damming the Wienfluss and letting it fill the valley behind. The area around the lake is a nature conservation area. On the northern shore, near the weir, stands the statue of Wilhelm Kress. He was an early pioneer of seaplanes and during testing one of his prototypes sank without trace after hitting debris on the surface. The long distance Westbahn runs along the northern shore of the lake.
Wikipedia https://en.wikipedia.org/wiki/Wienerwaldsee
Address 3013, Austria
Coordinates 48°10'52.29" N 16°7'6.63" E