The first historical mention of the castle can be found in the year 907. The Bavarian Sieghart, Count of Sempt and Ebersberg, took possession of "Bösenberg" and fortified it.
Greinburg Castle, built between 1488 and 1495, is the oldest residential castle in Austria and is located above the town of Grein on the Danube. It boasts a three-story Renaissance …