1) Heiligenblut & National Park Hohe Tauern and Velden Casino & Lake Wörthersee are among the top 10 sights in Carinthia. The National Park is the largest in Austria and covers 1800 square km of land. Velden is popular for its casino on Lake Wörthersee. 2) Other important sights include the Romanesque Gurk Cathedral, the medieval town of Friesach known for its walls and fortifications, and the ski resort of Bad Kleinkirchheim which is among Austria's most visited destinations. 3) Additional sights are Burg Hochosterwitz Castle, known for its 14 gates, Lake Ossiach which offers many outdoor activities,