42nd Street, just this one street, offers some of the best work by some of this country's greatest architects and designers.  However, New York is not just a collection of tall buildings; it is a collection of neighborhoods that changed with a growing city.  You will see how these changes will effect what would happen on its avenues over time.  The mysteries of how and why a neighborhood will transform, how what once was and what would be will influence architects and their design choices, will be revealed and explained.  Come see why New York City is called "Skyscraper National Park".