A Benedictine mission station was already located here in the early Middle Ages. The castle-like monastery building with the collegiate church, whose building history extends from the Romanesque to the late Rococo, is located on the peninsula of the same name, which was an island until modern silting. Wörth is the old name for island. The Höglwörther See was created when the Saalach glacier melted 10,000 years ago. The former Augustinian Canons' monastery was the smallest and poorest in the Principality of Salzburg and the only one in Bavaria that was spared from secularization. It was a time when people turned away from religious values and religion and turned towards the worldly. The donors and founders are not documented, but research assumes that between 1122 and 1128 Archbishop Konrad von Salzburg or the Counts of Plain (Maria Plain zu Salzburg) can be named for this. During this period, communities of this Reformed order also emerged in Bad Reichenhall St. Zeno, Berchtesgaden and in the nearby Salzburg cathedral chapter. The monastery was under the principality of Salzburg until 1810 and then fell to the Kingdom of Bavaria. In 1817 the then provost of the monastery himself arranged for the abolition. The forest, which was owned by the monastery, went to the state and is now used by the Bad Reichenhall salt works. The monastery was acquired by the Wieninger brewery family in 1821 and has been privately owned ever since.