We're not tourists, but we decided to check out the circle line tour. We went in the evening, so we got to see all of the buildings on the way down, and by the time we made it to the end (by the statue of liberty and brooklyn bridge) eveything was lit up, so it was a completely different, but still incredible, trip back up. I was really impressed with this tour - definitely worth checking out whether you're in the area or not (and would be perfect for out of town guests). Just make sure you go on a nice day.
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