During the 13th century Dardagny Castle, along with Bruel, La Corbière and Malval, formed a ring of castles, which secured the western boundary of the lands of the Bishop of Geneva. In 1298 there were two castles, which were separated by a small road. Each one belonged to one of the two noble families in Dardagny. In the 14th century, the south building was over two stories high and had a tower.
In 1646, the Favre family inherited both feudal domains in the village. Daniel Favre joined the two castles in 1655 through a gallery. He also built three towers and expanded the entire building. In 1721 Dardagny Castle went to Jean Vasserot who had the courtyard roofed over and converted into a feast hall which was decorated with Italian paintings. In 1740 staircase was built in the small central tower and the received its present appearance. It was purchased in 1904 by the municipality. They restored it in 1926 and 1932, after initially considering demolishing the building. Since then, the building has housed local government and a school.References:
Sirmione castle was built near the end of the 12th century as part of a defensive network surrounding Verona. The castle was maintained and extended first as part of the Veronese protection against their rivals in Milan and later under the control of the Venetian inland empire. The massive fortress is totally surrounded by water and has an inner porch which houses a Roman and Medieval lapidary. From the drawbridge, a staircase leads to the walkways above the walls, providing a marvellous view of the harbour that once sheltered the Scaliger fleet. The doors were fitted with a variety of locking systems, including a drawbridge for horses, carriages and pedestrians, a metal grate and, more recently, double hinged doors. Venice conquered Sirmione in 1405, immediately adopting provisions to render the fortress even more secure, fortifying its outer walls and widening the harbour.
Thanks to its strategical geographical location as a border outpost, Sirmione became a crucial defence and control garrison for the ruling nobles, retaining this function until the 16th century, when its role was taken up by Peschiera del Garda.