Whether sitting atop the Hudson or drifting just above a skyscraper, these conceptual floating airports put landing strips where they're needed most: in the middle of bustling metropoleis. Our friends at Oobject have assembled 12 of the best.
Be sure to also check out these converted jets and jungle planes.

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Aerial landing field on blimp

Japanese Megafloat Concept Airport

Edward Armstrong Seadrome

Skyscraper airport design concept, 1930

Proposed airport over Penn Station in NY, 1929

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Turntable runway, rooftop airport for cities

Floating Runways for Seaplanes

Norman Bel Geddes' design for a floating airport off Wall Street

M Lurcat design for floating airport in middle of Paris

London Airport over Thames, 1930s

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Zeckendorf's 1946 idea to deck over midtown Manhattan

Rooftop airport design from Amazing Stories, 1928