The Pollheimersche lordship of Wartenburg is documented as early as 1319. Their original seat of power was Wartenburg Castle on the southern foothills of the Hausruck above the Vöckla, and from 1639 the Alt-Wartenburg Castle to the north, both derelict today.
Neu-Wartenburg Castle is located on the right Vöcklauf, below the castle. The palace was built by the Viennese architect Anton Erhard Martinelli between 1730 and 1732 on behalf of Johann Albert Graf Saint-Julien-Wallsee (1673–1766). Count Wallsee bought the manor in 1729 from Nütz von Goisernburg, who had been there since 1640. He had Emperor Charles VI. invited to a falcon hunt for 3 days and wanted to offer him accommodation befitting his status. Already in 1754 he had to sell the property again because of debts. Through the Ghelen family, it passed to the nobles von Grechtler in 1766, to Thaddäus von Reischach in 1785 and to Ludwig Ratzesberg in 1847, until Albert Graf von Saint-Julien was able to bring it back into family ownership in 1869. The last heiress of the Saint-Julien family was adopted by Elisabeth Countess von Strachwitz; the castle has belonged to the von Strachwitz family since 1973.