New York City, New York
My family and I visited NYC in March. The tour of the Empire State Building through Viator was excellent. We purchased tickets in advance, and also got the "skip the line passes". To be honest, perhaps it was the time of year or day, but we really didn't need them becuase the lines were quite short- but we did probably save about 10 to 15 minutes with the passes. We also got the Ipod to listen to. If your note familiar with NYC, the guide did give a nice overview of where things were and a bit of history of NYC. Amazing views and really glad we went.