Hervé de Donzy, the Lord of Saint Aignan established Cornilly Abbey in the 11th century. It was authorized by Pope Urbanus II in 1091. The abbey grew rapidly, but in the 1357 it was destroyed by English Black Prince troops during the Hundred Years' War. Monks rebuilt the abbey, but it was again destroyed by religious fanatics in 1562. It was not rebuilt again and in the Revolution (1789) it was moved as a national property. Today impressive ruins remain, including parts of the 13th century church, western portal and choir. The Cornilly Abbey site is privately owned.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.