While we look at California, United States, the third-largest city, Antioch, lies in Contra Costa County. This city is situated in the eastern region of the San Francisco Bay Area. The Sacramento San Joaquin River delta is also found in this area. The river delta brought fertility to the land in the nearby area. Earlier in 1970, the people of Antioch only focused on agriculture and farming as their main source of revenue. It has changed drastically since people have started becoming more involved in different activities and varied sources of income. Antioch also has a great history, known to be the oldest town in this region. This city experiences dry summers, while the winters are mild, making winter the perfect time to visit the city.