Hochosterwitz Castle is considered to be one of Austria's most impressive medieval castles. It is on a 172m high Dolomite rock near Sankt Georgen am Längsee, east of the town of Sankt Veit an der Glan in Carinthia. The rock castle is one of the state's landmarks and a major tourist attraction.LocationHochosterwitz is 664m above sea level on the rim of the historic Zollfeld plain north of Magdalensberg, about 7km east of Sankt Veit. It can be seen from a distance of up to 30km on a clear day.