San Francisco is the fourth richly populated city in California and also ranks 13th among the most populous cities in America. It is also a major transportation center of the San Francisco Bay Area including San Jose and Oakland. The California Gold Rush in 1848 propelled the city into a period of rapid growth. After three-quarters of the city was destroyed by the 1906 earthquake and fire, San Francisco was quickly rebuilt, hosting the Panama-Pacific International Exposition nine years later. At present San Francisco is a popular international tourist destination, renowned for its chilly summer fog, steep rolling hills, eclectic mix of Victorian and modern architecture and its famous landmarks, including the Golden Gate Bridge, cable cars, and Chinatown.