Radau is a river of Lower Saxony, Germany. It is right tributary of the Oker. It rises in the Harz range, leaves the mountains at Bad Harzburg, and discharges into the Oker near Vienenburg.
Wikipedia https://en.wikipedia.org/wiki/Radau
Address 17 Nordhäuser Straße, 38667, Germany
Coordinates 51°51'13.524" N 10°32'50.869" E