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The Sphere, a sculpture by Fritz Koenig, survived the collapse of the Twin Towers partially intact. The unrestored sculpture now sits in New York City's Liberty Park near the National September 11 Memorial Museum. (Photo: Michael Rieger/FEMA)

The Sphere, a sculpture by Fritz Koenig, survived the collapse of the Twin Towers partially intact. The unrestored sculpture now sits in New York City’s Liberty Park near the National September 11 Memorial Museum. Photo: Michael Rieger/FEMA

The Sphere, a sculpture by Fritz Koenig, survived the collapse of the Twin Towers partially intact. The unrestored sculpture now sits in New York City’s Liberty Park near the National September 11 Memorial Museum. (Photo: Michael Rieger/FEMA)