30 Rockefeller Plaza is a skyscraper that forms the centerpiece of Rockefeller Center in Midtown Manhattan, New York City. Completed in 1933, the 66-story, 850 ft building was designed in the Art Deco style by Raymond Hood, Rockefeller Center's lead architect. 30 Rockefeller Center was formerly known as the RCA Building from its opening to 1988 and as the GE Building from 1988 to 2015. It was renamed the Comcast Building in 2015, following the transfer of ownership to new corporate owner Comcast. The building's name is sometimes shortened to 30 Rock, a nickname that inspired an NBC sitcom of the same name.
The tallest structure in Rockefeller Center, the building is the 28th tallest in New York City and the 60th tallest in the United States. 30 Rockefeller Plaza houses the headquarters and New York studios of television network NBC; the Rainbow Room restaurant; and an observation deck called Top of the Rock. 30 Rockefeller Plaza also contains numerous artworks commissioned as part of the building's construction.
30 Rockefeller Plaza was developed as part of the construction of Rockefeller Center. Work on the steel structure of the RCA Building started in March 1932.