The Rockefeller Center is a historic landmark in New York City built during the Great Depression. It consists of 19 commercial buildings over 22 acres, including 30 Rock (the GE Building) and Radio City Music Hall. 30 Rock houses the NBC headquarters and Top of the Rock observation deck. The observation deck offers panoramic views of Manhattan and was the site of a famous 1932 photo. On the plaza level is the Atlas statue, a 45-foot bronze sculpture. Guided tours by OnBoard Tours provide views of the Rockefeller Center and other New York City attractions.