Schloss Lamberg crowns the rocky spur above the confluence of the Enns and Steyr rivers. The medieval Styraburg, first recorded in 980, was the seat of the Margraves of Styria; after a fire in 1727 it was rebuilt in restrained Baroque, with formal courtyards and a long gallery overlooking the rivers.
The castle is now in public hands and used for exhibitions and concerts. Parts are open to visit; the gardens and courtyards are freely accessible. The view from the castle terraces over the old town and the rivers below is among the best in upper Austria.