5. The Koenig Sphere

The Sphere was rededicated to the victims of 9/11 after it was partially destroyed in the attacks. 

Originally designed by Fritz Koenig as a symbol of peace through world trade, the Sphere was situated between the World Trade Centers in 1971. The monument was partially destroyed during the September 11 attacks, and its fate was left uncertain for several months following. The Sphere was eventually placed in Battery Park in 2002 and was rededicated to the victims of 9/11. It remained in Battery Park until August 16, 2017, when it was relocated to Liberty Park, overlooking the 9/11 Memorial site.