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 Saturday marking the 30th anniversary of the debut of "Who's the Boss?," join us for a look at what the cast of the classic '80s sitcom are up to today.