The Tucson Main Museum features interactive and traditional exhibits about Arizona's dynamic past, including an underground copper mine, ranch and town life of the 1870s, Victorian-era period rooms, the archaeology of Tucson's downtown, an original stagecoach, and a 1923 Studebaker. Changing galleries depict a range of topics.
The museum regularly hosts public programs for all ages. Facilities may be rented for weddings and other events. The building also houses an extensive library and archives, and artifact collections; and serves as the Administrative Headquarters for the entire statewide agency.