A cultural, commercial, and financial center in the U.S. state of California. A popular tourist destination, San Francisco is known for its cool summers, fog, steep rolling hills, eclectic mix of architecture, and landmarks, including the Golden Gate Bridge, cable cars, the former Alcatraz Federal Penitentiary, Fisherman’s Wharf, and its Chinatown district. San Francisco is also the headquarters of companies such as Twitter, Airbnb, Levi Strauss & Co., Gap Inc., Dropbox, Uber and Lyft. The city, and the surrounding Bay Area, is a global center of the sciences and arts and is home to a number of educational and cultural institutions.
San Francisco Best Of