In the 11th century there was wooden fort on the site of current castle, built by Robert Mesnières. It was demolished in the 15th century and the new Renaissaince castle was built in the early 1500s and inaugurated in 1546. It was influenced by famous castles of Loire valley.
In 1590 Château de Mesnières was moved to the possession of Fautereau family. Louis Fautereau enlarged and decorated the castle and built a new chapel. However after the Great Revolution it was used as a prison and later orphanage. The castle was badly damaged by fire in 2004. Today it is restored and open to the public.
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.