Things to do in Klagenfurt

Klagenfurt am Wörthersee (; German: [ˌklaːɡn̩fʊʁt ʔam ˈvœʁtɐzeː] ; Slovene: Celovec; Austro-Bavarian: Klognfuat; Carinthian Slovene: Clouvc), usually known as simply Klagenfurt (English: KLAH-gən-foort), is the capital and largest city of the Austrian state of Carinthia, as well as of the historical region of Carinthia (including Slovenian Carinthia). With a population of 105,759 (1 January 2026), it is the sixth-largest city in Austria after Vienna, Graz, Linz, Salzburg, and Innsbruck.

Klagenfurt Cathedral (German: Klagenfurter Dom; Dom- und Stadtpfarrkirche Hll. Petrus und Paulus) is the cathedral of the Roman Catholic Diocese of Gurk-Klagenfurt and the main parish church of Klagenfurt.

The Landhaus Klagenfurt (lit.  'Klagenfurt Country House') situated between Heiligengeistplatz and Alter Platz at the edge of the oldest part of downtown Klagenfurt, Austria, is a historically significant secular building in the Carinthian capital.

Hochosterwitz Castle (German: Burg Hochosterwitz, Slovene: Grad Ostrovica) is a castle in Austria, considered one of Austria's most impressive medieval castles. It is on a 172-metre-high (564 ft) dolomite rock near Sankt Georgen am Längsee, east of the town of Sankt Veit an der Glan in Carinthia.