 The Unisphere was climbed in 1976 by George Willig (the so-called "Human Fly" who would later climb the World Trade Center), and Jerry Hewitt as part of a short film called "The Third Stone"
Directed by Paul Hornstein.The Unisphere was not again scaled until September 6, 2019, when Glen Schleyer, a member of the climate activist group Extinction Rebellion, climbed the Unisphere to hang up a banner protesting the 2019 Amazon rainforest wildfires.He chose the Unisphere because it celebrates the World's Fair theme of "peace through understanding".