 It is next to the "Neue Galerie", an art museum founded in 1976 in an 1874 neo-classical building.Bellevue Palace was erected in 1714 by the French architect and Huguenot refugee Paul du Ry as an observatory for Charles I (1654–1730), Landgrave of Hesse-Kassel.From about 1725 on, the palace was used as a residence for members of the Landgrave's court, such as his mistress Barbara Christine von Bernhold (1690–1756).