We, as a group of eight ranging from ages 9 - 65 years old went on the walking tour. Definitely include this in your visit to the 9/11 memorial. Our guides, Joan and Pete painted such a real and vivid picture of the terrorist attack that brought NY to it`s knees and the world together as we watched the horror unfold on that unforgettable day and the weeks, months and years to follow. There is so much information given to you during the tour that is unknown to most folks that weren't directly involved. It is a very emotional experience to a very sacred site. Our hearts go out to all the families of the victims of 9/11 and to all the responders who did such a miraculous job of going through the carnage and to all of those who have made such a beautiful memorial to those who were lost. Sadly we didn't have time to visit the Memorial Museum or the Tribute Center which was closed but we hope to return to do that in the future.