who discovered san diego
In 1542, Juan Rodriguez Cabrillo was sent by Mexico's viceroy to explore the coast north of western Mexico. On September 28 Cabrillo landed in a bay he named San Miguel, now the city of San Diego, and became the first European to sail along the coastline of present-day California. Cabrillo sailed as far north as the mouth of the Russian River passing by the coast of Marin County and Point Reyes.