I took the Secrets of Gran Central Terminal tour in October, it went above and beyond my expectations l. My tour guide, Bob was incredible. He was so knowledgeable and funny. It was a very unique history tour which I will never forget. I'm so glad I stumbled upon this! Highly recommended if you're into Art Deco, 1890s to 1930s era things, gorgeous architecture, trains or even early industrial American history (Think Rockefeller's, Astor's and the like). Bob was very patient with all my questions, and very caring of the elderly couple with our group who were not as mobile as some of us. an excellent tour all round.