I scheduled 2 private tours for my husband and our 13 year old grandson, the Secrets of Grand Central Station and The Remnants of Penn Station at 2 separate times on one day, both with Justin. Justin suggested it might be more fun for our grandson if we combined the tours and rode the subway to include the secrets of the NY Subway, usually offered as a separate tour. The resulting tour was fabulous! Justin's sensitivity to what our grandson would enjoy most was spot on, and his visuals brought it all to life. My husband and I were thrilled with Justin's attention to detail, his personable manner and genuine knowledge of and enthusiasm for his subject matter. Our grandson, a real train enthusiast, hasn't stopped talking about it yet, and neither have we. Justin combines all the perfect traits of a guide, and anyone able to schedule a tour with him will have a most memorable experience. His give aways at the end of pictures of Penn station before and after, etc. will be lasting mementoes of our wonderful experience. Untapped tours is amazing with its unique offerings, excellent guides and ease of scheduling.