The Pentagon through time

Published On: Aug 24 2011 09:50:38 AM CDT   Updated On: Sep 10 2013 01:27:54 PM CDT
The Pentagon through time

Finished in 1943, the Pentagon is a symbol of U.S. military might. It's also one of the places attacked on 9/11.

Pentagon Slideshow: Pentagon Memorial Construction
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Aude/Wikimedia Commons

Work started on a memorial to those killed in the Sept. 11 attacks in 2006.

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