Biljoen estate was first mentioned in 1076. In 1530 Charles, Duke of Guelders, built the first castle and it was rebuilt by Alexander van Spaen (1619–1692) into the present day castle with four equal corner towers. The family Van Spaen rebuilt the castle again in the the 18th century. In 1795 French troops were quartered in the castle. After they left the castle was plundered and the interior largely destroyed. The damage was restored with amongst others ornamental plaster and ceiling paintings.
The estate was originally called Broekerhof, and was a place where taxes were collected. In 1076 it was donated by Henry IV, Holy Roman Emperor to the Sint-Pieter Chapter in Utrecht. In 1530 it was sold to Charles, Duke of Guelders. He in turn had to sell it again in 1535 because of debts. It came into possession of Charles' general Roelof van Lennep. Roelof's son Carl, mayor of Arnhem, inherited it in 1546. His son Roelof inherited it in turn in 1567. After family divisions it was sold to the baronial family Van Spaen in 1661. In 1849 baron Van Hardenbroek allowed Anna Pavlovna of Russia to use it temporarily. In 1872 it was inherited by the family Lüps, until 2008.
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.