Klausenkaserne Military Hospital
Prince Archbishop Johann Ernst von Thun was a popular leader of Salzburg and is still fondly remembered for his charitable deeds. He was particularly fond of medical aid and endowed not only the St. Johanns Spital (the core of today′s modern Landeskrankenhaus), but also a military hospital. This military hospital was built as so-called "Klausenspital" not far from the St.-Johanns-Spital and also in today′s district of Mülln and as a contrast to other hospitals such as the Bürgerspital (for wealthy burghers, also nearby) or the Bruderhaus (for poorer people). The Klausenspital was constructed in the years of 1695 to 1697.
The maintenance of the building was paid for by the public, but the medical treatment and the care was to be paid for by the patient, aka the individual soldier. In the course of the Napoleonic Wars, many injured soldiers had to be treated. In 1809, the Theatinerkloster (later the Kajetanerkloster and yet later the hospital of the Barmherzige Brüder) was adapted into a provisory hospital. This institution remained in place and the Klausenspital was closed in 1813.
From now on, the building served as barracks for local army units. The name "Klausenkaserne" became widely used. The barracks were closed after World War I, but the name remains popular even today. The long, Baroque building looks very plain and rather unspectacular from outside. It was built directly into the Mönchsberg Hill underneath Schloss Mönchstein.
German Wikipedia on the Klausenkaserne
City of Salzburg on Mülln, including the Klausenkaserne (German)