San Francisco city, most beautiful cities in the United States and the jewel of Northern California is fourth-largest city by population in California with population over 0.87 million that accounts for 2.2% of the state population The city is full of history, great neighborhoods, parks, beaches, museums, and a whole host of entertainment options and things to do while attending the conferences. Some of the most famous attractions are Alcatraz Island and Fisherman's Wharf, but the sightseeing possibilities here are extensive.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's Chinatown is the largest of its kind in North America.The Golden Gate Bridge is a California icon gracing San Francisco Bay. It is the most photographed site in the city, with the orange structure backed by blue water, or in many cases, peaking through low lying clouds. At night, the flood-lit structure is equally striking. Alcatraz Island in San Francisco Bay is one of America's most infamous prisons.