Rockefeller Center occupies three blocks in Midtown Manhattan bounded by Fifth and Sixth Avenues to the east and west, between 48th Street to the south and 51st Street to the north. By 1936, most of the complex had been completed. Rockefeller Center Inc. only needed to develop three empty plots in the middle of the complex's northern and southern blocks. The site of 1 Rockefeller Plaza, located on the southern block, was being used as a
parking lot, and at the time, it was the city's largest parking facility. In 1936,
Time Inc. expressed interest in moving out of their
Chrysler Building offices into a larger headquarters, having just launched their
Life magazine. Rockefeller Center's managers persuaded Time to move to a proposed skyscraper on part of the southern empty lot, located on Rockefeller Plaza between 48th and 49th Streets, by promising the company seven floors and a penthouse; space to expand; a 20-year lease; and the right to name the building after themselves. Excavation for a new building at 1 Rockefeller Plaza, numbered 9 Rockefeller Plaza at the time, started in June 1936. The original plans stipulated a 32-story building, but the height was increased to 36 stories with the use of setbacks on the 48th Street elevation. The number of setbacks was minimized, which increased rentable space within the building, and the original blueprints for the plot were retained for the Time & Life Building. The steelwork for that building was laid on September 25, 1936, and was complete by November 28, forty-three working days later. The Time & Life Building, as it was known, opened on April 1, 1937, along with the final block of Rockefeller Plaza abutting the building, between 48th and 49th Streets. The tower was renamed for its street address after General Dynamics moved to
St. Louis in 1971. ==References==