Nittenau is a municipality in the district of Schwandorf, in Bavaria, Germany. It is situated on the river Regen, 18 km southeast of Schwandorf, and 24 km northeast of Regensburg.
It is the "sister city" of Lake Zurich, Illinois.
Wikipedia https://en.wikipedia.org/wiki/Nittenau
Coordinates 49°11'52.954" N 12°16'18.778" E
