The Abbey can be visited
Klein-Mariazell Abbey

The Klein-Mariazell Abbey, a former Benedictine monastery, is located in the market town of Altenmarkt an der Triesting in Lower Austria.
History+
The foundation of Klein-Mariazell Abbey dates back to the Babenberg Margrave Leopold III, who was also responsible for the establishment of Heiligenkreuz and Klosterneuburg Abbeys. The original abbey church was a basilica in a bound system with a transept, choir square, and three apses. Due to its remote location, economic difficulties, and repeated destructions, the monastery never achieved the significance of other large abbeys.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:Kleinmariazell_Forstverwaltung.jpg
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 48.0363, 15.9741