Burgruine Petersberg, Medieval castle ruins in Friesach, Austria.
Burgruine Petersberg is a medieval castle ruins on a high ridge near Friesach, featuring a six-story residential tower and remnants of two chapels. The site offers views over the Metnitz river valley and contains the restored Rupert Chapel within the tower.
Archbishop Adalwin of Salzburg received the estate in 860, and castle construction began around 1076 during the Investiture Controversy. The fortress became an important religious and administrative center of the region during this period.
The castle now houses the Friesach City Museum, displaying objects from medieval trade and regional mining activities. The exhibits show how important this place was for the city's economic development.
The site is located on a hilltop, so sturdy footwear is recommended and the path can be steep. The castle and attached museum are open daily to visitors, but check specific opening times before planning your visit.
The fortifications include shell towers on the north and south sides of the Upper Courtyard that extend to the rocky summit. This tower design is an unusual feature of medieval fortification techniques and shows the site's strategic importance.
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