The fountain consists of two 50-foot glass block towers at each end of a shallow reflecting pool. The towers project video images from a broad social spectrum of Chicago citizens, a reference to the traditional use of gargoyles in fountains, where faces of mythological beings were sculpted with open mouths to allow water, a symbol of life, to flow out. Plensa adapted this practice by having faces of Chicago citizens projected on LED screens and having water flow through a water outlet in the screen to give the illusion of water spouting from their mouths. The collection of faces, Plensa's tribute to Chicagoans, was taken from a cross-section of 1,000 residents.
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