Built in the 13th century, Dardagny Castle initially formed part of a fortification system protecting the western border of the Bishop of Geneva's lands, along with the Bruël, La Corbière and Malval castles.[2] It consisted of two fortified houses separated by an alley in 1298, each belonging to one of the two lordships of Dardagny.[2] In the 14th century, the southern building was more than two stories high and possessed a tower.[2] In 1646, the Favre family inherited both parts of the fief and, in 1655, connected the two houses into a single castle, adding more floors and three corner towers.[2]
In 1721, the castle passed to Jean Vasserot, who closed the inner courtyard and turned it into a function hall, decorated with Italianate paintings.[2] The central turret was replaced by an interior staircase in 1740, giving Dardagny Castle its current appearance.[2] The castle was bought by the municipality of Dardagny in 1904 and restored between 1926 and 1932, after authorities had considered demolishing it.[2] It has since housed the town hall and school.[2]
