[In-person tour] Join architectural historian Anthony W. Robins for this popular annual Christmas Day tour of Rockefeller Center, the private real estate venture that has evolved into the public square of midtown Manhattan and an urban wonderland during the holiday season. Discover the surprising history, remarkable art and stunning architecture of the development conceived as a new home for the Metropolitan Opera, but built instead as Radio City. MAS in-person tours last approximately 90 minutes to 2 hours and are held outdoors, therefore no masks are required. If you prefer to wear a mask, though, we want you to feel comfortable doing so. Meeting location is provided with registration. With rare exceptions, MAS in-person tours take place rain or shine. For all tours, there are no refunds, cancellations, or exchanges unless we cancel a tour. Online registration closes one hour prior to the tour start time.