Train and history buffs will love a visit to this underrated downtown Tucson attraction. The Southern Arizona Transportation Museum in downtown Tucson preserves and interprets Southern Arizona railroad heritage through the museum's educational outreach, oral history and archival collections. The City of Tucson purchased the former Southern Pacific Railroad Depot on Toole Avenue in 1998, restoring the main depot and three adjacent building to reflect accurately their Restoration of the main depot building and the three adjacent buildings to their 1941 architectural style was completed in 2004.