Hohensalzburg Castle (German: Festung Hohensalzburg, literally "High Salzburg Fortress") is a castle in the Austrian city of Salzburg, atop the Festungsberg mountain. Erected at the behest of the Prince-Archbishops of Salzburg, it today with a length of 250 m (820 ft) and a width of 150 m (492 ft), is one of the largest medieval castles in Europe.