Klagenfurt Cathedral to be rebuilt in 1724. Bishop Franz Xaver von Salm-Reifferscheidt made it the cathedral of the Diocese of Gurk in 1787. Klagenfurt Cathedral The Cathedral and parish church of Saints Peter and Paul, also known as Klagenfurt Cathedral, is the cathedral of the Roman Catholic Diocese of Gurk-Klagenfurt and the main parish church of Klagenfurt. It was built by Protestants and dedicated to the Holy Trinity in 1581, and was the largest Protestant church in Austria at that time. The cathedral was commissioned by Christoph Windisch, Klagenfurt' s first mayor. In 1600, during the Counter-Reformation, it was given to the
Villach the forces of the Austrian Empire in 1813 and incorporated into the Austrian Kingdom of Illyria by 1816. The city's economy was decisively promoted by a western branch of the Southern Railway line, which finally reached Villach in 1864, providing growth and expansion. By 1880, the town had a population of 6,104. In World War I, Villach near the Italian front was the seat of the 10th Army command of the Austro-Hungarian Army. The town obtained statutory city status during the interwar period on 1 January 1932. After the Austrian "Anschluss" to Nazi Germany in 1938, the mayor of Villach