On the southern bank of Lake Ossiach (Ossiacher See) lies Ossiach, the largest village in the area and home to an 11th-century Benedictine abbey (Stift Ossiach) that was rebuilt in the 16th century.
The former Abbey Church of the Assumption is now the local parish church, and was remodeled in Baroque style in the 18th century.
Highlights include its superb stucco decoration and wall and ceiling paintings from 1750, as well as the Late Gothic winged altar in the northwest chapel depicting the Madonna with Child.
