The Arenberg Castle is a castle on the right bank of the river Salzach in Salzburg.
The castle was first documented in the 14th century and belonged to the lords of Keutzl, the lords of Pirglstein and later the lords of Rehling until the 16th century. In the 17th century, the castle was purchased by Archbishop Johann Ernst von Thun, but in 1695 it became a nunnery of the Ursuline Sisters. However, this was short-lived and three years later, the nuns moved to Gstättengasse.
In 1791, gardener Sebastian Rosenegger bought the property and encouraged the building of a new park in the castle grounds. He passed it to his son, the businessman and amateur archaeologist Josef Rosenegger. In 1792, Rosenegger discovered, during excavations for the new park, a large Roman cemetery and treasures. The park soon became a popular destination from miles around Salzburg, and it was visited by several state leaders.
Wikipedia https://en.wikipedia.org/wiki/Arenberg_Castle,_Salzburg
Address 10 Arenbergstraße, Salzburg 5020, Austria
Coordinates 47°48'0.108" N 13°3'30.407" E