Martinschlössl, Protected heritage castle in Klosterneuburg, Austria

Martinschlössl is a protected heritage castle in Klosterneuburg featuring multi-story buildings topped with mansard roofs arranged across spacious grounds that slope toward the Danube. The complex showcases Rococo decorations and neo-baroque facades decorated with Ionic pilasters and ornamental details.

Construction began in 1766 under Ludwig Freiherr von Ripke, who unified two existing townhouses into one estate, and major alterations occurred between 1857 and 1869. Those later renovations transformed the complex's appearance significantly.

The name recalls the Martinskirche nearby, and the complex has served many purposes: a noble residence, a hotel in the 20th century, and today a private home. Visitors can spot the 1869 portal bearing the coat of arms of Andreas Freiherr von Gredler, and the stone-cast bowls on the garden stairway.

The property sits at Martinstraße 34 and 36 and remains privately owned, allowing visitors to view it from the surrounding area. The location is easily reached via Donaustraße with views toward the river valley.

The singing Trapp family, whose story inspired The Sound of Music, lived in this complex. The painter August Pettenkofen stayed here in 1851, and in the 20th century the building served as a hotel before passing into private ownership.