Vilseck is a town in the Oberpfalz region of northeastern Bavaria, Germany situated on the river Vils, a tributart of the Naab river. The town is geographically separate from a nearby large American military base known as the Rose Barracks but more commonly referred to as Vilseck. The base was built in 1937-1938. It's name comes from the location of a castle built in 920. Eck is the German word for corner. The Vils river has a tight bend where the Burg is located. Thus, the name Vilseck.