Stumbling the other day, I discovered the existence of this monument:
It is a monument dedicated to the U.S. to honor those lost at 9/11 and make a statement against terrorism. Designed by Zurab Tesereteii, it was dedicated in 2006. About 100 feet tall the teardrop is made of stainless steel and the structure is steel coated with bronze. It's located in Bayonne, New Jersey. It's official title is "To the Struggle Against World Terrorism."
Somewhat more interestingly, the sculptor, Tesereteii, is a Georgian who is the president of the Russian Academy of Arts.