Grönsö (or Grönsöö) Castle was built in 1607-1610 by the Privy Council Johan Skytte. The building was constructed of brick and granite in a French style with pitched roof, ridge turrets and four rectangular corner towers. The ground floor can still be seen today with well-preserved interiors and painted ceilings from the 1600s.
Family Skytte owned Grönsö throughout the 1600s until it was reduced to the crown. After reduction, Grönsö has seen number of ownership changes. During the first half of 1700s of the castle was owned by the family Falkenberg . The castle underwent major repairs, whereby the house lost its tower in 1738. The building got its simple but stylish look that survived into modern times.
In 1700 the second half of the estate was owned by Stockholm doctor David von Schultzheim , who in 1786 built a Chinese pavilion on the waterfront, which today is one of Grönsö’s major attractions. The pavilion is located on the waterfront and built according to models of the architect William Chambers and the interior is decorated with shells and minerals from East Asia.
In 1820 Grönsö was acquired by Court Chamberlain, Reinhold Fredrik von Ehrenheim, the first in the current owner's family. The castle has never been completely reconstructed, but has gradually evolved. Traces of each period, thereby continuously preserved in the palace in an unusual way today. The castle is owned and operated today by the family von Ehrenheim and Grönsöö cultural foundation. Grönsö covers 720 hectares of land, which includes apple orchards. Castle Park renovated carefully with the help of landscape architects from the Swedish University of Agricultural Sciences.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.