San Francisco, commonly known as "San Fran," is the cultural, commercial, and financial center of Northern California. San Francisco is located on the West Coast of the United States at the north end of the San Francisco Peninsula and includes significant stretches of the Pacific Ocean and San Francisco Bay within its boundaries. The city is renowned for its steep rolling hills, eclectic mix of Victorian and modern architecture, and its famous landmarks such as the Golden Gate Bridge, Alcatraz Island, and Chinatown. San Francisco has a population of over 870,000 people.