The Abbey can be visited
Schönbühel Abbey

On a rock on the right bank of the Danube in Lower Austria stands Kloster Schönbühel, a former Servite monastery. It is known for its early Baroque architecture and the replica of the Grotto of Bethlehem, which made it a pilgrimage site.
History+
The origins of Kloster Schönbühel date back to 1666, when Count Conrad Balthasar von Starhemberg called upon the Servite monks to establish a monastery at this location. Construction began on the remains of a presumed medieval Danube watchtower, popularly known as the “Teufelsgschloß” (Devil's Castle). In the very year of its founding, work began on a Chapel of the Holy Sepulchre, and the first mass was celebrated in 1667. This was followed by the construction of a Calvary in 1669 and, between 1670 and 1675, a replica of the Grotto of Bethlehem, initiated by Eleonora de Gonzaga. The official foundation of the convent took place in 1672.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: https://commons.wikimedia.org/wiki/File:Kloster_Schoenbuehel_001.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: 48.2628, 15.3771