The Church of Santa Maria della Steccata from 1718 is the official seat of the knights of the Constantinian Order of St. George. This glorious order traces its ancient origins of the militia that the Emperor Constantine created to defend the banner bearing the insignia of the cross after his victory over Maxentius at the Milvian Bridge (312). The impressive building, caretaker of the work of Parmigianino "the Wise Virgins and the Foolish Virgins", you access other areas that are home to the Museum of Constantine. The tour allows you to see the burial ground of the Dukes of Bourbon and Farnese built at the behest of Marie Louise in 1823; Sacristy Noble, seventeenth-century masterpiece of craftsmanship that are kept exceptionally precious silver and embroidered vestments, the picture gallery full of paintings dating from the XVI-XVIII centuries. and a room dedicated to memories and objects that belonged to the Farnese and Bourbon families with different rarity: the sketches for the uniforms of the Constantinian Knights, the shirt worn by Louis XVI to the gallows and more stemmari, watercolors, decorations and historical memories.