The structure, which overlooks the quarries of Marco Vito, in via G. Codacci Pisanelli, houses 34 vintage FS and FSE rolling stock, including steam locomotives, wagons and carriages, plus five service vehicles displayed inside two sheds (one from the 1920s and one from the 1970s) and on the external tracks. In the adjacent rooms, on the other hand, memorabilia, models and signaling equipment are exhibited.