Schloss Seibersdorf, Baroque castle in Seibersdorf, Austria.

Schloss Seibersdorf is a three-story Renaissance castle in the centre of Seibersdorf, north of the parish church, ringed by an old moat and reached by a stone bridge. A wrought-iron gate between two obelisks opens onto the near-square courtyard, and one-story pavilions stand on the four old corner bastions. Its appearance still matches Georg Matthäus Vischer's 1672 drawing.

Built probably in the 16th century with no known predecessor, the castle was held in 1594 by Georg Leonhard and Rudolf von Stoitzing and later by Franz Graf Nadasdy von Pottendorf. After Nadasdy's execution it passed to Niklas Palffy, then to Julius Friedrich Graf Busselini, and it withstood the Ottoman siege around 1683. Leopold Carl Graf Cavriani, who bought it in 1715, rebuilt it in Baroque style with a new facade; his family kept it until 1932.

The castle's name comes from the village founder Siegfried, recorded around 1045. The building served as a refuge for locals during the two Turkish invasions of Austria and was never captured. In 2012 it was a filming location for Wolfgang Murnberger's comedy Alles Schwindel, a mistaken-identity story about Gustav Klimt's "Kiss".

The privately owned castle can only be viewed from the outside. It stands in the middle of the village, north of the parish church, and is reached by a stone bridge over the former moat. A wrought-iron gate between two obelisks opens onto the courtyard.

The building's present appearance closely matches a 1672 drawing by Georg Matthäus Vischer, so the baroque facade and massing seen today can be compared with that early view. In 2012 the castle served as a film set for "Alles Schwindel", a comedy by Wolfgang Murnberger built around Gustav Klimt's painting "Der Kuss".