Another cards sent by Sarah. This one is from Austria but not the one i'm still looking for.
The card shows Kufstein Fortress, in Tyrol.
The Fortress (Festung) is built on a rock the height of which amounts to 90 m. Sometimes erroneously called Schloss Garoldseck, the fortress was mentioned as Castrum Caofstein in a document for the first time in 1205. It was enlarged several times. The most important tower, the round and impressive Kaiserturm, was built from 1518-22. Several times in its history, the fortress was used as a prison. Today it is famous for its large organ (Heldenorgel). - in: wikipedia