Örbyhus estate existed already in the 14th century, but the first castle was built by John Kristiernsson (Vasa) around then year 1450. It was a strong fortification with tower. Örbyhus remained in a possession of royal Vasa family until the end of 16th century. Gustav Vasa, who acquired Örbyhus through an exchange with his cousins in 1548, constructed the national fortress in the middle of Uppland complete with ramparts, moats and 54-foot-high stone walls around his grandfather’s stronghold tower. In Gustav Vasa’s castle there are many hidden passages and casemates with space for a garrison and stores for many years. The former King Erik XIV was imprisoned in Örbyhus until his death 1574-1577.
Gustav Banér, the governor of Västergötland, acquired Örbyhus in 1641 and rebuild the castle in the present form of a baroque castle. Örbyhus was owned at the beginning of the 18th century by de Geer at Leufsta, who made both Leufsta and Örbyhus the entailed estate of his nephew, the scientist Charles de Geer. During the 200 years that followed it was the names of de Geer, von Platen, de la Gardie, Klingspor and Barnekow that left their mark on Örbyhus.
In 1900 the castle was purchased by Count Carl Gustav von Rosen; it was taken over during the same year by Count Eugène von Rosen, who commissioned extensive restoration and decoration work for the building.
Today guided tours are arranged during most of the summer season of King Erik XIV’s prison, the castle park and the carriage museum.References:
The Château de Chaumont was founded in the 10th century by Odo I, Count of Blois. The purpose was to protect his lands from attacks from his feudal rivals, Fulk Nerra, Count of Anjou. On his behalf the Norman Gelduin received it, improved it and held it as his own. His great-niece Denise de Fougère, having married Sulpice d'Amboise, passed the château into the Amboise family for five centuries.
Pierre d'Amboise unsuccessfully rebelled against King Louis XI and his property was confiscated, and the castle was dismantled on royal order in 1465. It was later rebuilt by Charles I d'Amboise from 1465–1475 and then finished by his son, Charles II d'Amboise de Chaumont from 1498–1510, with help from his uncle, Cardinal Georges d'Amboise; some Renaissance features were to be seen in buildings that retained their overall medieval appearance. The château was acquired by Catherine de Medici in 1550. There she entertained numerous astrologers, among them Nostradamus. When her husband, Henry II, died in 1559 she forced his mistress, Diane de Poitiers, to exchange Château de Chaumont for Château de Chenonceau which Henry had given to de Poitiers. Diane de Poitiers only lived at Chaumont for a short while.
Later Chaumont has changed hands several times. Paul de Beauvilliers bought the château in 1699, modernized some of its interiors and decorated it with sufficient grandeur to house the duc d'Anjou on his way to become king of Spain in 1700. Monsieur Bertin demolished the north wing to open the house towards the river view in the modern fashion.
In 1750, Jacques-Donatien Le Ray purchased the castle as a country home where he established a glassmaking and pottery factory. He was considered the French "Father of the American Revolution" because he loved America. However, in 1789, the new French Revolutionary Government seized Le Ray's assets, including his beloved Château de Chaumont.
The castle has been classified as a Monument historique since 1840 by the French Ministry of Culture. The Château de Chaumont is currently a museum and every year hosts a Garden Festival from April to October where contemporary garden designers display their work in an English-style garden.