Unisphere is a sculpture that represents the terrestrial globe, with its variations in relief. Located in the borough of Queens in New York, more precisely at Flushing Meadows - Corona Park, it has a height equivalent to a 12-story building and was specially designed for the 1964 World's Fair. This sculpture, made entirely of stainless steel, was designed to celebrate the beginning of the space age and represents global interdependence. The three hoops that circle the globe represent the orbits performed by Yuri Gagarin, the first man in space, John Glenn, the first North American to go into space and the initial orbit executed by Telstar, the first telecommunications satellite to be launched . This monument is often visited during the summer, especially between August and September, when the US Open Tennis Championship is played on the nearby courts.