the city. Fuxing Park, located in the former French Concession, features formal French-style gardens and is surrounded by high-end bars and cafes. Zhongshan Park in western central Shanghai is famous for its monument of Chopin, the tallest statue dedicated to the composer in the world. Built in 1914 as Jessfield Park, it once contained the campus of St. John's University, Shanghai's first international college; today, the park features sakura and peony gardens and a 150-year-old platanus, and it also serves as an interchange hub in the metro system. One of Shanghai's newer parks is the Xujiahui Park, which was built in 1999, on the former grounds of the Great Chinese Rubber Works Factory and the EMI Recording Studio (now La Villa Rouge restaurant). The park has an artificial lake with a sky bridge running across the park. Shanghai Botanical Garden is located southwest of the city center and was established in 1978. In 2011, the largest botanical garden in Shanghai—Shanghai Chen Shan Botanical Garden—opened in Songjiang District. Other notable parks in Shanghai include Lu Xun Park, Century Park, , Gongqing Forest Park, and Jing'an Park. The Shanghai Disney Resort Project was approved by the government on 4 November 2009 and opened in 2016. The $4.4 billion theme park and resort in Pudong features a castle that is the biggest among Disney's resorts. More than 11 million people visited the resort in its first year of operation. Air pollution Air pollution in Shanghai is not as severe as in many other Chinese cities, but is still considered substantial by world standards. During the December 2013 Eastern China smog, air pollution rates reached between 23 and 31 times the international standard. On 6 December 2013, levels of PM2.5 particulate matter in Shanghai rose above 600 micrograms per cubic meter and in the surrounding area, above 700 micrograms per cubic meter. Levels of PM2.5 in Putuo District reached 726 micrograms per cubic meter. As a result, the Shanghai Municipal Education Commission received orders to suspend students' outdoor activities. Authorities pulled nearly one-third of government vehicles from the roads, while much construction work was halted. Most inbound flights were canceled, and more than 50 flights at Pudong International Airport were diverted. On 23 January 2014, Yang Xiong, the mayor of Shanghai, announced that three main measures would be taken to manage the air pollution in Shanghai, along with surrounding Anhui, Jiangsu, and Zhejiang provinces.