Bilstein Castle is a hill castle in the Sauerland in Germany. It is located in the eponymous quarter of Bilstein in the town of Lennestadt. Since 1927 the building has been a youth hostel.
Wikipedia https://en.wikipedia.org/wiki/Bilstein_Castle_(Lennestadt)
Coordinates 51°5'45.055" N 8°1'6.244" E
