The Wilhelminenberg Castle is now used as a hotel and is located in the midst of a 120,000 m² park, which slopes gently into the Liebhartstal from the south-south-east facing front of the castle. After several changes of ownership, Prince Julius von Montléart (Jules Max Thibault Montléart, 1787–19 October 1865) and his wife Maria Christina bought the castle, which was already in need of renovation, in 1824. They had it enlarged by two side wings in 1838. After the prince's death, an inheritance dispute broke out, which is why the property was offered by court order for 125,000 guilders. The son Moritz von Montléart was awarded the contract and donated the castle and grounds to his wife Wilhelmine in 1866. Since his request to rename from Gallitzinberg to Wilhelminenberg was not officially granted, the prince had panels with the inscription "Wilhelminenberg" affixed to all entrances to the castle and thus achieved an indirect name change. The prince died on March 16, 1887 and, at the request of his widow, was buried near the castle in a mausoleum built in neo-Gothic style. Princess Wilhelmine distributed the inheritance among her relatives, keeping only her personal property and the proceeds of the Wilhelminenberg. Because of her generosity towards the poor, she was called "The Angel from Wilhelminenberg" by the population. She died on March 26, 1895 and was buried next to her husband in the mausoleum.