Schwärzenberg Castle (Ruin)

The origins of Schwärzenberg Castle likely date back to the 13th century. It was built on episcopal land by the Lords of Fronau, a family mentioned in documents as early as the early 12th century. The first written mention occurred in 1306 in the enfeoffment book of the prince-bishopric, naming Andreas von Fronau as the castellan. In the late 14th century, Peter Fronauer came into conflict with Regensburg merchants, forcing him in 1400 to sell half of the castle to Hans Zenger von Zangenfels. Later, the entire complex came into the possession of the Zenger family.