YAN'AN, CHINA OCTOBER 7: A family is photographed in front of a portrait of a young Mao Tse-tung at Zao'yuan Revolutionary Site Park on October 7, 2008 in central Yan'an, China. The city has become a popular place for communist pilgrims, as it was the endpoint for the Long March and the center of the Chinese Communist revolution from 1935 to 1948. Chinese communists celebrate Yan'an as the birthplace of the revolution. Maos's house can also be visited. Chinese people love theme parks and new ones are opening constantly. It's estimated that there's about 2400 theme parks in the country. (Photo by Per-Anders Pettersson) .