This absolutely brilliant museum inside the Castle of St. Peter is a must-see attraction, even if you don't have an interest in underwater archaeology. 

The layout of the exhibits is clearly organized, and the dazzling artifacts are complemented by slick multimedia displays.

 After the entrance, with its huge amphorae collection and a glass-blowing workshop that kids will find fascinating, you enter the Glass Wreck Hall, which displays a 16-meter ship that sunk in AD 1025.