What is city on the bay?

"City on the bay" is an informal nickname for San Francisco, California, a city located on the west coast of the United States. The nickname stems from the fact that San Francisco is located on a bay known as San Francisco Bay, which is one of the largest natural harbors in the world. The city is known for its iconic landmarks such as the Golden Gate Bridge, Alcatraz Island, and Lombard Street. San Francisco is also known for its diverse culture, vibrant food scene, and liberal social activism. It has a population of over 880,000 and is a major economic and cultural center in the United States.