First seaman chapel was built to Jurmo probably in the 12th century and it has been a center of near archipelago people for centuries. According the legend Jurmo residents assisted ships to wreck purposely and robbed their cargo in the 16th century. That’s why Gustav Vasa, the king of Sweden, ordered to destroy the whole island and all inhabitants. All forests were burnt and only couple of local people survived alive.
The present chapel and cemetery were founded in 1846. There are anyway much older artefacts inside the chapel, like the wooden statue of St. Anna from the 15th century.
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.