The Unisphere, a stainless steel globe designed by Gilmore D. Clarke, stands in Flushing Meadows. It was built for the 1964 New York World's Fair, and it represents the Earth with continents in relief and three orbital rings symbolizing early satellites. Built by the American Bridge Company, this 120-foot-diameter, 350-ton structure became an iconic symbol of Queens and celebrated the space age and the fair's theme, "Peace Through Understanding." It was designated a New York City landmark in 1995.