Burg Neuhaus, Medieval castle in Weissenbach an der Triesting, Austria.

Burg Neuhaus is a stone fortress featuring circular towers positioned at its eastern corners and square defensive towers on the western side, all enclosed by protective walls. The property is divided into two sections today, with one portion belonging to the Huemer family and the Archdiocese of Vienna owning the other part.

The core of the castle was a fortified house built probably in the second quarter of the 13th century; it was first documented in 1246, when an urbarium names Ulrich von Neuhaus as lord. In 1595 the castle passed to the Wolzogen family, and Hans Christoph von Wolzogen had it extensively remodelled at the start of the 17th century. In 1683 Ottoman troops plundered and burned it, and from 1694 a glass and mirror factory used the surviving rooms until it moved away in 1742.

The castle church, dedicated to St. John Nepomuk, was built between 1610 and 1612 by Hans Christoph von Wolzogen as a Protestant prayer house, replacing a Romanesque chapel. A crypt beneath the altar holds four members of the Wolzogen family and a priest. After standing empty from 1628, it became a Catholic parish church in 1733 and received a Baroque interior.

The castle is divided between two different owners today, which means access to certain areas may be restricted or require prior arrangement. Visitors should check ahead to find out which sections are open and how to navigate the grounds properly.

The glass and mirror factory set up in 1694 was not Venetian; it was installed in the castle's still usable rooms. Emperor Karl VI had the castle repaired from 1724 and a new wing for the mirror factory built on the west side of the courtyard, but the factory moved to the foot of the hill in 1742 and to Schlöglmühl in 1830.