"Chinatown," Oakland rather than San Francisco is your best bet. Many of the buildings and streets of Chinatown reflect the diverse nature of its history, in architecture and in the bilingual signs seen throughout the neighborhood. The curious traveler can venture to take a bus southwards along Broadway, and come to Jack London Square. The unlikely mixture of warehouses and very expensive restaurants and posh atmosphere alongside some of the landmarks of the city's waterfront makes the Square an interesting place to visit and explore, even for locals. It's the home of the USS Potomac and the site of the namesake author's residence, still preserved and humbly standing not far from a saloon from the same era. Just west of Downtown and slightly north of the Financial District