Schloss Riedegg

Schloss Riedegg in Alberndorf in der Riedmark, Austria began as a medieval stronghold first recorded about 1150, and its fabric and documentary traces show continuous adaptation from the Middle Ages into the early modern period. The present appearance of the palace owes much to work carried out in the 1500s and the major rebuilding completed in 1609, and the site served as a regional lordly residence and estate seat for members of the Starhemberg family. Inscriptions and later records link the castle to imperial administration and to investments in water supply and cultivated gardens, underlining its role as both a defensive place and a managed noble household.

The earliest phase survives in parts of the complex and in the chapel, whose vaulted ceilings date to the later 1300s and point to a substantial medieval presence. In 1529 the property, then held by Erasmus von Starhemberg, was transformed into a castle with labor supplied by Turkish prisoners, reflecting events of that decade. Ownership remained with the Starhembergs into the following century; in 1593 the estate passed to Reichard, called Richard, von Starhemberg.

A destructive fire led to a comprehensive reconstruction completed in 1609 under Richard, Baron von Starhemberg. An inscription placed above the gateway records that rebuilding campaign, lists his territorial titles including Wildberg and Lobenstein and his role as councillor to Emperor Rudolf II, and records practical improvements: water was brought by lead piping from the neighboring hill and new vineyard terraces and gardens were laid out. By the mid-1700s the castle formed the administrative center of a small lordship that, together with Breitenbruck, had some 385 subjects attached to it.

In the 20th century the property left the Starhemberg family. In 1933 Prince Ernst Rüdiger Starhemberg sold the castle to an English owner, Slater, who resold it in 1936 to the Missionaries of Mariannhill. The missionaries established a monastery here and later developed a school complex that included a secondary school. After renovations in the 1970s a small Africa museum was set up inside the building, housing ethnographic material brought together by the religious community. The Polytechnic School Gallneukirchen was based in the castle until 2016; that school moved out by the end of the 2018/2019 school year and was finally closed in 2022.

In 2015 an investor group purchased the property. The Missionaries of Mariannhill retained ownership of the chapel, the Africa museum and the cemetery while moving into new apartments on site with lifelong residence rights. At the same time residential leases ended and parts of the complex were adapted for a therapy and doctors’ centre operating outside public health insurance contracts. The castle is protected under listing as a historic monument.