The museum is dedicated to the siege of Turin in 1706 and to the historical figure of Pietro Micca. The building is connected to the underlying contrace tunnel system. The museum displays relics, photographs, films and models illustrating the city's defense systems and the military events of the siege of Turin in 1706, as well as the historical events that occurred before and during the Spanish succession war (1700-1713). From the exhibition rooms you can access the system of galleries of contromina of about 400 meters, which develop at 6 and 14 meters below the city floor.
The rich exhibition occupies three rooms connected to the hall of the Palazzo Reale halls: the Sala della Rotonda, so-called because the link between Palazzo Reale and Palazzo Madama, the magnificent Beaumont Gallery and the Medagliere, specially designed, were inserted here. from Pelagio Palagi to collect coins, medals and seals belonging to the Royal House.