Massing in the context of "Robie House"

The Bush Tower (also the Bush Terminal Building, the Bush Terminal International Exhibit Building and formerly the Bush Terminal Sales Building) is a 433-foot-tall (132 m) building in the Midtown Manhattan neighborhood of New York City, just east of Times Square. Designed by Frank J. Helmle and Harvey Wiley Corbett of the firm Helmle & Corbett, the building occupies a plot at 130–132 West 42nd Street between Broadway and Sixth Avenue.

The Bush Tower was built for Irving T. Bush's Bush Terminal Company, which operated Bush Terminal in Sunset Park, Brooklyn, New York City. The 30-story section of the tower facing 42nd Street was developed between 1916 and 1918. A 10-story wing, completed in 1921, extends south to 41st Street. The Bush Tower's design combined narrowness, height, and Neo-Gothic architecture, and the massing contains several setbacks to comply with the 1916 Zoning Resolution. The facade contains trompe-l'œil brickwork, which creates vertical "ribs" with a false "shade" pattern to enhance the building's verticality. It originally contained a buyer's club on its three lowest stories and exhibits on its upper stories.

30 Rockefeller Plaza (officially the Comcast Building; formerly RCA Building and GE Building) is a skyscraper that forms the centerpiece of Rockefeller Center in the Midtown Manhattan neighborhood of New York City, New York. Completed in 1933, the 66-story, 850 ft (260 m) building was designed in the Art Deco style by Raymond Hood, Rockefeller Center's lead architect. 30 Rockefeller Plaza was known for its main tenant, the Radio Corporation of America (RCA), from its opening in 1933 until 1988 and then for General Electric until 2015, when it was renamed for its owner Comcast. The building also houses the headquarters and New York studios of television network NBC; the headquarters is sometimes called 30 Rock, a nickname that inspired the NBC sitcom of the same name. The tallest structure in Rockefeller Center, the building is the 28th tallest in New York City and the 65th tallest in the United States, and was the third tallest building in the world when it opened.

30 Rockefeller Plaza's massing consists of three parts: the main 66-story tower to the east, a windowless section at the center, and a 16-story annex to the west. The building's design conforms with the 1916 Zoning Resolution; it is shaped mostly as a slab with setbacks primarily for aesthetic value. The facade is made of limestone, with granite at the base, as well as about 6,000 windows separated by aluminum spandrels. In addition to its offices and studios, 30 Rockefeller Plaza contains the Rainbow Room restaurant and an observation deck called Top of the Rock. 30 Rockefeller Plaza also includes numerous artworks and formerly contained the mural Man at the Crossroads by Diego Rivera. The entire Rockefeller Center complex is a New York City designated landmark and a National Historic Landmark, and parts of 30 Rockefeller Plaza's interior are also New York City landmarks.

The 1916 Zoning Resolution in New York City was the first citywide zoning code in the United States. The zoning resolution reflected both borough and local interests, and was adopted primarily to stop massive buildings from preventing light and air from reaching the streets below. It also established limits in building massing at certain heights, usually interpreted as a series of setbacks and, while not imposing height limits, restricted towers to 25% of the lot size. The chief authors of this resolution were George McAneny and Edward M. Bassett.