Pentagon

Description:

• Across the Potomac River in Arlington, Virginia is the headquarters of the armed forces of the United States, the largest office building in the world. Encompassing 29 acres, with a five-acre courtyard in the center, the five-sided structure has over 17 miles of hallways. Approximately 23,000 employees, military and civilian, come to work here each day. Group tours are available with a reservation.
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