San Francisco was founded in 1776 and has since become the 13th most populated city in the United States. Tourists from all over the world visit San Francisco to experience its many attractions like taking a ride in one of the famous cable cars, driving across the Golden Gate Bridge, or taking a ferry boat out to the historical Alcatraz Island. San Francisco is known as home to the California Gold Rush and also the site of the "Summer of Love" in the 1960's.