The Villa Wartholz is a former imperial villa in Reichenau an der Rax. Villa Wartholz was designed by Heinrich von Ferstel in the historicist style in the years 1870 to 1872 for Archduke Karl Ludwig of Austria. The castle-like building with towers was for recreational purposes, not for military means. The villa was designed with a view over the valley. Karl Ludwig spent so much time in this area, he reserved this place only for hunting by the imperial court. It was built near by his home Karl-Ludwig-Haus on the Rax.
This area around Reichenau was a popular tourist area for the aristocratic society since the construction of the Southern Railway. Members of the imperial family, and other members of the nobility, artists and scientists met at the Villa Wartholz. Nearby another palace subsequently arose, the Schloss Rothschild.
The villa also was used by Emperor Charles I of Austria and Empress Zita. Their son, Otto von Habsburg (1912 – 2011) was born in Villa Wartholz. His baptism and first Communion were received in the chapel, which was located in the villa. On 17 August 1917, Otto von Habsburg held a ceremony where he handed over the Military Order of Maria Theresa to 24 officers, among them Kövess, Dankl, Arz, Wenzel von Wurm, Cavallar and Banfield.
Due to the Habsburg Law the Wartholz villa was owned by the Austrian state. The Habsburgs staked a claim of private ownership and for many years this was a point of contention whether they would be reinstituted as owners. In 1973, the government sold the mansion to the State of Lower Austria. From this it was again sold in 1982 and is now privately owned.
References:Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.