Guasti

Historical marker location:

2855 E Guasti Rd, Ontario, California

( Marker is on Guasti Road east of Archibald Avenue, on the left when traveling east.)

California was the site of the nation's first successful oil well in 1892. The well was drilled in the city of Los Angeles and produced about 25 barrels of oil a day. Today, California remains a major oil-producing state.