20 / 24
Construction workers Shawn Underwood (L) and Neil Hosick (R) walk behind the cement walkway at the Flight 93 National Memorial outside Shanksville, Pennsylvania July 6, 2011. The permanent memorial, will be dedicated this year on September 10, but will not be completed until 2014. (REUTERS/Jason Cohn)

9/11 Memorials

The tragic events of 9/11 have inspired a range of memorials across the country in order to remember and pay tribute to the victims.