Philly's CBD skyline with this new tower is so balanced. It almost follows the form of:
I particularlly like this image posted above this post to showcase the aesthetic form:
Credit: TallCoolOne
I mean it might not look like a perfect triangle, but the skyline from certain angles brings out this kind of aesthetic geometry. Similar to Lower Manhattan in a way from certain angles. In other words, you really don't have something just sticking out there. The height, the progression of it, the mass and bulk, all work in unison to create a great looking skyline that complements the lower rising forms, and the background horizon.
If I'm speaking abstract thinking for some let me know... and I'll clarify.