This isn't from the top floor. I picked one of the floors in the crown randomly, it's about 1,150 feet up.
From the Transit Center Plaza. Note the reflection of Tower 3, these buildings will reflect each other a lot due to their mirror-like glazing and proximity. Also note how the fins seem to disappear when viewed head-on, but dominate the facade of the building when viewed from the side.
From 1 World Trade Center, Restaurant Mezzanine (I think they call it the 101st floor) elevation 1,250 feet.
From Church St.
From a couple blocks north on Greenwich
Vessey and Church
Near Trinity Church
West and Liberty. Again, note the vastly more textured facade of Tower 2, it helps a lot with bridging Tower 1 with 3 (I'm not going to focus on 3WTC until I give it a once over, so stay tuned).
Battery Park City near the river, 2 World Financial is to the left. Note that from this angle the diamonds appear random and crooked.