Evening 911 Memorial Tour. Gain a deep understanding of the events of September 11, 2001, on this 1.5-hour guided tour and optional ticket to the One World Trade Center observatory. Weave through the streets of Lower Manhattan and visit sites important to the tragedy and rebuilding of the WTC, including St. Paul's Chapel, the 9/11 Preview Center, the Oculus, Brookfield Place, and the World Trade Center Memorial. Your journey includes an in-depth account of the events leading up to the attacks of 9/11, the rescue efforts in the wake of the tragedy, and the effect the tragedy has on New York City, America--and the entire world. Book and Save 10%! Evening 911 Memorial Tour.