World's largest commercial office building, 59 floors ½ acre roof-top heliport, 808 ft. high, seventh tallest office structure in the world. 65 elevators and 18 electric stairways include the word's fastest high rise bank of elevators moving at the rate of 1,700 ft. per minute - four 4-foot wide moving stairs leading into building from main concourse of Grand Central Terminal, capable of handling 30,000 persons per hour. |