com, Dropbox, Reddit, Square, Inc. , Dolby, Airbnb, Weebly, Pacific Gas and Electric Company, Yelp, Pinterest, Twitter, Uber, Lyft, Mozilla, Wikimedia Foundation and Craigslist. The city, and case learn about solution surrounding Bay Area, is a global middle of case learn about solution sciences and humanities and is home to a couple of educational and cultural institutions, similar to case study solution University of San Francisco USF, University of California, San Francisco UCSF, San Francisco State University SFSU, case learn about solution De Young Museum, case learn about answer San Francisco Museum of Modern Art, case study answer SFJAZZ Center, and case learn about answer California Academy of Sciences. The earliest archaeological facts of human habitation of case learn about solution territory of case find out about solution city of San Francisco dates to 3000 BC. The Yelamu community of case study answer Ohlone people resided in a couple of small villages when an overland Spanish exploration celebration, led by Don Gaspar de Portolá, arrived on November 2, 1769, case find out about answer first documented European visit to San Francisco Bay. Seven years later, on March 28, 1776, case learn about solution Spanish dependent case learn about solution Presidio of San Francisco, followed by a assignment, Mission San Francisco de Asís Mission Dolores, dependent by case learn about solution Spanish explorer Juan Bautista de Anza.