The Sanok Royal Castle was built in the late 14th century in Sanok, Poland. The castle is situated on the San River at hill 317 m above sea level on a steep slope. Today it is the seat of the Sanok Historical Museum.
Wikipedia https://en.wikipedia.org/wiki/Sanok_Castle
Official Website http://www.muzeum.sanok.pl/
Coordinates 49°33'44.033" N 22°12'33.338" E