Native Americans have called northern California region home for nearly 10,000 years. Before the arrival of the Europeans, the indigenous Ohlone/Costanoan people seasonally occupied villages in what is now the San Francisco peninsula and gathered shellfish along the Presidio's bayshore. Archaeologists have located a shell mound in the Crissy Field area that dates back to A.D. 740. Important archaeological investigations continue in the Presidio to better understand this period.

Today, descendants of the Ohlone/Costanoan people live throughout the Bay Area.

Read about the Spanish Period.