Amazing views during the day, but at night there are too many lights inside and they reflect off the glass which makes photography impossible. There are a view spots where it's dark enough to get good shots, but most of the time you'll capture light reflections that ruin parts of the photos. You can see plenty despite that. If you're really into the history, there's a tablet with narration that explains a lot about the buildings, but it costs money. The 9/11 memorial is breathtaking and the other monuments are something to see. It's mostly a shopping center though.