Schloss Hollenburg (Slovene: Humberk) is a medieval castle near Köttmannsdorf in Carinthia, Austria. It is located on a rock of the northern slope of the Drava valley.Hollenburg castle is located on a hill above the Rosental valley and even now, 850 years after it was first described, it is the cultural center of the Rosental region. After an eventful history (earthquake in 1343, invasion of the Turks in 1478, earthquakes in 1571 and 1690, great fire in 1856)the castle is now an attractive destination for excursions. The castle has a lot of interesting architectural features, and styles range from a renaissance courtyard to a stairway with gothic frescos. The view over the Rosental valley is exceptional
