Our tour through the rebuilt World Trade Center site was one of the more rewarding things I have done in recent years. Our guide, Chris, is the major reason I say that. He was extremely knowledgeable and well-prepared. He gave us a highly detailed and interesting, oral and visual summary of those awful events 22 years ago. As someone who has lived in New York most of his life and who experienced 9/11 up close, his anecdotes were often very moving to me. He was patient, always asked if we had questions and gave us many opportunities to rest and soak up the atmosphere while we digested what he had told us. Very professional.