San Francisco, in California's Bay Area, is known for its incredible top attractions. The Golden Gate Bridge, Alcatraz Island, and the Fisherman's Wharf district are all must-sees that draw millions of tourists each year. To get the most out of a trip to San Francisco, plan to visit in late spring or early fall; the temperate weather will give you plenty of options for outdoor activities like biking along Embarcadero or walking through Mission Dolores Park. By avoiding peak summertime crowds and prices, you'll have time to really explore this vibrant city and appreciate everything it has to offer.