The feudal castle of Sancerre was one of the strongest castles of the Middle Ages built in France. It was the seat of Counts of Sancerre. The future king Charles VII and Joan of Arc stayed at the Chateau de Sancerre, which was strategically placed on the border of the "kingdom of Bourges."
The town of Sancerre was formerly fortified. It was built under the castle, closing access to the less steep slope of the mountain. The castle and city walls were demolished in 1621.
Today only the tower, foundations, cellars or parts of walls remains of castle. The location of the old castle is now occupied by a mansion (1874) of Louis XII and a private park, owned by the Company Marnier-Lapostolle.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.