Veltrusy Mansion is a baroque château situated near the banks of the Vltava River, about 25 km north of Prague. The mansion is open to the public for visits.
The mansion was initially built in 1716 by architect František Maxmilián Kaňka for Count Václav Antonín Chotek of Chotkov and Vojnín. The original mansion was extended in 1764 by architect Giovanni Battista Alliprandi on the orders of Count Rudolf Chotek of Chotkov and Vojnín, who also commissioned the interior decoration. Further extensions and the annexes of the mansion were constructed in 1804.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.