Highly recommend this walking tour. Our tour guide Alison, was very knowledgeable and shared her personal experience/memories of that day while attending school in NYC. It brought back memories I had of that day. The museum was awesome which exhibited timeline of that day, many pictures, video and audio of peoples experience that day. There were items that were damaged by the attack fire truck, ambulance, clothing, plane, buildings, etc. Top of One World Trade had awesome views of the city.