Finished in 1943, the Pentagon is a symbol of U.S. military might. It's also one of the places attacked on 9/11.
Construction on the Pentagon started on Sept. 11, 1941, in the midst of World War II. The five-sided design was chosen to accommodate existing roads around the building's original site near Arlington National Cemetery; a different site was ultimately picked, but the design was kept, according to the History Channel.
The following five celebrity urban legends will likely live on long into the future, despite the fact that none of them is remotely true.
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With Alyssa Milano marking her 42nd birthday on Friday, join us for a look at what she and the rest of the cast of "Who's the Boss?" are up to today.