Remembering 9/11: The Evolution of Ground Zero

Sept. 11, 2007
With more activity at the site, the reflecting pool was moved to the base of the seven-story ramp leading to the bottom of the pit. This year, the pool's design was modified again, into the shape of a small circle, with two squares evoking the footprints of the towers inside it.

• Lower Manhattan: A History of Diversity and Conflict
• A More Distant America