From the NY Times:
...Terrace on the Park may be best known for the view from the outside, hard to miss from Queens highways: four conjoined, 120-foot, T-shaped towers, which are a dramatic leftover from the 1964-65 New York World’s Fair.
The building’s roof was a Port Authority helipad and turned the structure into the fair’s aerial gateway. In August 1965, during the fair, the Beatles used it as a way station toward their record-setting concert at Shea Stadium. They made the short trip to the stadium in a Wells Fargo armored truck.
Jeffrey Kroessler, a preservationist who is writing a book on the history of Queens, said “many people in Queens are fond of it” because it is a symbol of exuberant mid-1960s optimism about a space-age future, a world where people could hopscotch by helicopter among multiple helipads, like one atop what was then known as the Pan Am Building in Midtown. A 1977 accident atop Pan Am dashed that vision.
When the fair ended, the 1,100-seat Top of the Fair restaurant, with its floor-to-ceiling windows, became an obvious site for a banquet hall. A penthouse ballroom replaced the helipad, and part of the roof became an outdoor terrace for cocktails. During its four and a half decades, practically every New York mayor has broken bread at Terrace on the Park.