The tour was very good and well organised. The airport style security is very off putting but that's not viator's fault.
Wow, this ticked all the boxes.
Big thanks to Remi - he was amazing!
it was a very bad experience after a rushing run into the trafic to meet guide Rachel at 20 Brodway steet we started the tour and in the first building she said that we will go for a short restroom brake and when i got back she was gone with the rest off the group leving me and my wife their without knowing where to go after i ran like a idiot evry where to catch here in a very crouded ground zero site after an hour off serching i came across the other guide and finich my tour with her thank s Rachel for leaving me alone in that building never ever again with viator you need to be more profesionel and serious rate one star