Trolleholm Castle (Trolleholms slott) was originally named Kattesnabbe and later Ericholm. It has been known since 1424, and was a monastic estate in the late Middle Ages. Trolleholm belonged to members of the Thott family (1533-1680) and Trolle family (1680-1806). Frederik Trolle (1693-1770) gave it its present name in 1755. The castle was reconstructed in the 1760s according the design of Carl Hårleman. The present appearance date from the late 19th century, when Trolleholm was renewed in the early Renaissance style.
During 1806 was the estate by inheritance to the family, who still owns it. The holder of the estate carry the family name Trolle-Bonde. The estate comprises 110 houses and a total of 62,800 acres (254 km2). There is a very valuable library including 40,000 books. The great garden is 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.