The Pentagon is a city unto itself, and its distinctive 5-sided building lays claim to six ZIP codes. Designed by American architect George Bergstrom and dedicated in 1943, the grounds are home to the 2-acre (0.80-hectare) Pentagon Memorial.
A walking tour of the Pentagon covers 1.5 miles (2.4 kilometers) over the course of an hour and highlights the missions and accomplishments of the Armed Services, the Office of the Secretary of Defense, and the Joint Staff. Many tours of Washington DC and Arlington stop at the Pentagon, whether you want to visit on a private or group tour. Hop-on, hop-off tours typically stop at the Pentagon along with DC highlights such as the White House, Jefferson Memorial, and US Capitol Building.