Photo shows a snapshot of Rockefeller Center in New York City, United States. Rockefeller Center is a complex of 19 commercial buildings covering 22 acres (89,000 m2) between 48th and 51st streets in New York City, United States. Built by the Rockefeller family, it is located in the center of Midtown Manhattan, spanning the area between Fifth Avenue and Sixth Avenue. [China.org.cn/by Li Xiaohua]