With the aid of a very wide-angle lens, we can see the whole face of the tallest building in Pittsburgh from Grant Street. This was a very tall building when it was put up: it was the eighth-tallest in the world, and the tallest outside New York and Chicago. Now it doesn’t crack the top two hundred, but it is still record-breakingly massive in one way: no other building has a roof that big that high. Other tall buildings taper; this one goes straight up.