Tower; it was very crowded and hard to get up to the windows to see out and take photos. We went to the top of the old WTC when our children were small, and I think the views from that building were easier to get your mind around. They had line diagrams on the windows to show you what the buildings were. In this one, you have to sort that out by yourself. Or maybe we just didn't have the right guide.
This is the entry to the security line, where you have to place your purses, cell phones, cameras, keys, etc., in the X-ray, just as at an airport.
In the third photo up from the bottom, the
dark grey building in the center of the cluster (the short one) is where my daughter lived; two blocks from Ground Zero.