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Unisphere is a 12-story high, spherical stainless steel representation of the Earth. It is located in Flushing Meadows-Corona Park in the Borough of Queens, New York City.

Unisphere was conceived and constructed as the Theme Symbol of the 1964/1965 New York World's Fair. The Theme of the World's Fair was "Peace Through Understanding" and Unisphere represented the theme of global interdependence. It was dedicated to "Man's Achievements on a Shrinking Globe in an Expanding Universe."

Unisphere was designed and donated by the United States Steel Corporation and was constructed by that company's American Bridge Division.

Unisphere is centered in a large, circular reflecting pool and is surrounded by a series of water-jet fountains designed to obscure its tripod pedestal. The effect is meant to make Unisphere appear as if it is floating in space.

During the Fair, dramatic lighting at night gave the effect of sunrise moving over the surface of the globe. Additionally, the capitols of nations were marked by uniquely designed lights that held four bulbs each. When one would burn out, another would rotate in place so that the bulbs would not have to be changed during the two-year run of the Fair. Both lighting effects are no longer in operation.

Three large orbit rings of stainless steel encircle Unisphere at various angles. These orbit rings represent the tracks of early satellites orbiting the earth. America was at the height of "The Space Age" when Unisphere was constructed and the rings serve as reminders of America's early space achievements.

In 1989, Unisphere was completely refurbished and given "Landmark" status by the City of New York. Unisphere is the "unofficial" symbol of the Borough of Queens, NY.

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