Concept: bulldoze under Central Park and replace it with a modern, international airport. The idea is so simple, so beautifully elegant, so inevitable that it's hard to believe we didn't think of ...

Another, similar plan from the same time imagined repurposing existing rooftops in Manhattan. The eight-runway airport would serve commuters from as far as 100 miles away who wanted to fly to work.

Concept: bulldoze under Central Park and replace it with a modern, international airport. The idea is so simple, so beautifully elegant, so inevitable that it’s hard to believe we didn’t think ...