Pentagon

The Pentagon is the name of a US Federal building located in Arlington County, Virginia. It is the headquarters of the military apparatus of the United States and houses the U.S. Department of Defense. Construction on the building began on September 11th, 1941 and was completed on January 15th, 1943 at a cost of 83 million dollars.

The Pentagon plays a large role in the genres of speculative fiction and is often found in stories involving threats of a national level, such as an alien invasion or giant monster rampage as well as the more mundane, yet equally important conventional threats including terrorist activity.