Chicago's Chinatown contains several attractions and parks, including Ping Tom Park, Chinatown Square, and the Nine Dragon Wall. The population is around 49,645 people, with the Asian population making up around 27,000, about 90% of whom are Chinese. Chinatown was originally located at Van Buren and Clark Streets but landlords raised rents, forcing many to relocate south to the current location along Cermak Road and Wentworth Avenue. The Chinese population in Chicago has grown over time, starting in the 1870s with the completion of the Transcontinental Railroad, and increasing in the 1950s-60s due to immigration laws and events like the Communist takeover of China.