In 1606 Anna Freiin von Polheim und Parz acquired the castle and had it renovated. Unfortunately, after her death it was seriously neglected, whereas in 1685 it was transferred to Count Ernst Rüdiger von Starhemberg, as well as Castle Schönbühel. His descendant Ludwig von Starhemberg sold both castles in 1819 to Count Franz von Beroldingen, where it remained in the family until 1930. At that time Castle Schönbühel, together with the Aggstein ruins, were acquired by Count Oswald von Seilern Aspang.

Today, Aggstein is open for the public and is used for events such as the plants & herbs festival in May or the fabulous Arts and Crafts Market in November, as well as corporate and private events, such as weddings...

The chapel can still be used for weddings and christenings.

For more detailed informations, see website