The Tongva (/ˈtɒŋvə/ TONG-və) are Native Americans who inhabited the Los Angeles Basin and the Southern Channel Islands, an area covering approximately 4,000 square miles (10,000 km2). The Tongva are also known as the Gabrieleño and Fernandeño, names derived from the Spanish missions built near their territory: Mission San Gabriel Arcángel and Mission San Fernando Rey de España. Along with the neighboring Chumash, the Tongva were the most powerful indigenous people to inhabit Southern California. At the time of European contact, they may have numbered 5,000 to 10,000.