Château de Balleroy in Balleroy with baloon museum ..Built in 1631 by the celebrated architect François Mansart (1598-1666) at the request of Jean de Choisy, the Château de Balleroy and its surrounding buildings are one of the first urban plans that inspired other chateaux, including Versailles. All the buildings were built from scratch. The chateau itself has retained almost all of its original features and it is because of this that it witnessed the major innovations of the 17th Century. In 1970, Malcolm S. Forbes, owner of a major U.S. newspaper group acquired the chateau which was then fully restored and refurbished. Today, his four sons and his daughter continue his work..