You always see this building in long shots of the NY skyline, from across the river. I’ve never seen picture from close enough to give a better description, but it looks as if the structure probably tops out around 40 or 50 storeys, not terribly tall. It’s quite a bit shorter than the buildings around it.
Up to about the midpoint it’s your typical, blocky building. From there onward however, it has several setbacks that make the top half look somewhat like a pyramid. In any contemporary skyline shot I’ve ever seen, the building is there, so it must go back to WWII or before.
And while we’re on the subject of setbacks, do the adjacent offices usually have doors opening out onto them, so they can be used as terraces?