The Antique Gas & Steam Engine Museum (AGSEM) is a living-history museum founded in 1969 located on 55 acres (220,000 m2) of county-owned land on the outskirts of Vista, California. The museum is a non-profit 501c(3) organization. It is located at 2040 N Santa Fe Ave. in Vista. It is run by several paid employees, along with volunteer help. The museum is open almost every day of the year and has two bi-annual shows, on the 3rd and 4th weekends of June and October. The museum also has other public and private events throughout the year. Exhibits at the museum include: