The Museum exhibits about 11.000 finds, starting from prehistory to modern times, divided into three categories: artilleries with accessories, various models, munitions, long weapons, short weapons, wheel plates, flintlock plates, triggers and accessories for ancient weapons, melee weapons, flags, various trophies, medals and paintings.

Moreover there are prehistorical stone weapons and archaeological relics. Among the most important relics there are: an ax dating back to 3.000 BC, an helmet dating back to the 4^th century BC, a "small hawk with the joy of zoomorphic mouth" of the 15^th century, a short gun, a "Bombardella" in wrought iron coming from the Castle of Morro of 14^th century.

During the years the Museum has been enriched of new materials and it was necessary to enlarge the exhibition area; the artilleries from 16^th to 18^th century and almost all the other finds are in the Mastio, while the artilleries of 19^th and 20^th century with some relics are in a detached place, in a disused military building that already was Stock Artillery and Chemical Defence​. The free rooms of Mastiowere destined to house thematic expositions.

Near the Museum, you can visit the harmonious urban complex of San Carlo square and the Palace of the Academy of Science, built in the 17^th century and that hosts three museums such as the famous Egyptian Museum.