Mittersill Castle (German Schloss Mittersill) sits on the northern side of the Salzach valley some 140m above the city of Mittersill in the Pinzgau region in the Federal state of Salzburg, Austria.
The area surrounding the castle have been settled since at least the last 4000 years, but the significance of the castle in trans-alpine traffic became especially important between the 10th to 14th centuries.
The first records known of the castle date to the 12th century while Pinzgau was under the control of the Duchy of Bavaria, when the Counts of Lechsgemünd (subsequently: Mittersill) decided to establish their family seat there. The site had been chosen on the northern side of the Salzach river because of its ideal location in not only being able to control merchant traffic from Pass Thurn but also that exiting from the southern Felber valley. The castle itself was built in a horseshoe-shape, with an opening to the east and a defensive wall to the south.
In 1228 the fiefdom of Pinzgau came under the control of the Archbishopric of Salzburg and the castle was made the seat of the Archbishops in Upper Pinzgau, and was used as a regional court for almost the next 600 years, including witch trials in Pinzgau, that started in the 16th century and continued into the 18th century. In 1816 after the Napoleonic Wars the Regional Court was transformed into a k. u. k. District Court, and despite the abolition of the Archbishopric of Salzburg in 1806, clergy continued to reside in the castle until as late as 1850.
During the German German Peasants' War of 1525-1526 the castle was plundered and burnt to the ground. Rebuilding of the castle started in 1537 at a cost of 2500 Guilder to give it the appearance that it bears today, with later rebuilding work in the 16th century made after further smaller fires in 1555 and 1597. Though the castle was rebuilt to incorporate already existing structural elements, it was enhanced by newer defensive technologies and more modern comforts. So it was that the west side was strengthened through addition of its two characteristic turrets. In the southern one, the so-called “Witches’ Tower”, a castle chapel was created on the upper floor.