St. John's Church was built in the 13th century, probably between 1234-1297. It was originally home of the Dominican monks, but over the centuries fell into the possession of the Lutherans. It has also served as an arsenal for the city.
The most notable features of this unheralded church are the impressive 15th century sculptures of St. Peter and St. Paul which adorn the the 18th century altar. According the legend two monks who were bricked to the southern wall during the construction. They spent all their life long and were fed trough a window from the outside.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.