Walls, towers and gates Fortino Leopoldo The Lorraine Fort, also known as the Fortino di Forte dei Marmi, is one of the main attractions of the city. The monument is located in the city center, and dates back to the eighteenth century. This was built as a defensive complex, but it also assumed the purpose of a warehouse for marble. Today it is home to the Municipal Gallery and Museum of Satire and Caricature.