San Francisco is a beautiful city surrounded by the Pacific Ocean and San Francisco Bay. Its famous characteristics range from cable cars, to the Golden Gate Bridge, Alcatraz Island, Chinatown, Coit Tower, curvy Lombard Street, Victorian style homes, and modern skyscrapers. The second most densely populated US city after New York, its weather is also unique. Most of the year San Francisco stays in the 60-degree range. During the spring and early summer, fog can cover portions of the city all day long.</p>