New York's three closest airports move 140 million people in and out of the most visited place in the United States. But these three travel hubs were not designed to handle this growing number of visitors. Here’s how New York's airports are evolving to handle one of the most complex airspaces on Earth.

Four evenings a year, the brick, steel, and asphalt of Manhattan's cityscape take part in a unique alignment of metropolis and cosmos. The rays of the setting sun align perfectly with Manhattan's street grid—framed by skyscrapers and creating a breathtaking wash of illumination along the cross streets. Frederick P. Rose Hayden Planetarium Director Neil deGrasse Tyson first noted the phenomenon more than a decade ago and coined the term "Manhattanhenge."

More than twelve million immigrants have passed by the Statue of Liberty in New York. People came seeking a better life, but perhaps the Lady herself had other plans.