The first castle on the spot was erected by the Dukes of
Masovia as early as the 13th century. However, in the following century their court was moved to the future
Royal Castle in Warsaw, and the Ujazdów Castle fell into neglect. In the 16th century, a wooden manor was built there for Queen
Bona Sforza. . The ruins of the castle of the Mazovian princes were then incorporated into a new fortified manor built by King
Sigismund III Vasa for his son, future King
Władysław IV Vasa. In 1975, however, the works on reconstruction of the castle to its 18th-century design were given a green light, and the project by Piotr Biegański was chosen. ==Centre for Contemporary Art==