The Château de Beauregard is a Renaissance château in the Loire Valley, in Cellettes, south of Blois and near Cheverny. The Doulcet family built the original manor in the late fifteenth century. In 1545 Jean du Thier, Secretary of State for Finance under Henri II, bought the estate and built most of the château, incorporating the old manor. Paul Ardier bought it in 1617, demolished the old house and built two symmetrical wings around the central gallery. The architect is unknown.
The Portrait Gallery is about 85 feet (26 meters) long and 20 feet (6 meters) wide, with 327 portraits of notable people from 1328 to 1643 and about 5,500 Delftware tiles. Its blue ceiling uses lapis lazuli.
The walled park covers about 173 acres (70 hectares). The Gosselin family has owned the château since 1925, and it is still inhabited and open to visitors.

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