The Pentagon - Wikipedia
The Pentagon is the headquarters of the United States Department of Defense, in Arlington County, Virginia, across the Potomac River from Washington, D.C. The building was constructed on an accelerated schedule during World War II.

U.S. Department of War > Pentagon Tours | U.S. Department of War
The Pentagon, one of the world's largest office buildings, is the headquarters of the Department of War. Located in the Washington, D.C., area, the five-sided building has three times the floor space of the Empire State Building.

Home | U.S. Department of War
The Department of War is America's largest government agency. With our military tracing its roots back to pre-Revolutionary times, the department has grown and evolved with our nation.

U.S. Department of Defense (DOD) | USAGov
The Department of Defense (DOD) provides the military forces needed to deter war, and to protect the security of the United States.

Pentagon - Wikipedia
In geometry, a pentagon (from Greek πέντε (pente) 'five' and γωνία (gonia) 'angle'[1]) is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or self-intersecting. A self-intersecting regular pentagon (or star pentagon) is called a pentagram.

PFPA | Visit the Pentagon | Plan Your Visit
Plan Your Visit to the Pentagon The Pentagon is headquarters for the Department of War, a military command center, and a secure facility.

Pentagon | History & Features | Britannica
Pentagon, large five-sided building in Arlington county, Virginia, that serves as the headquarters of the U.S. Department of Defense.

Pentagon - Location, Building Timeline, 9/11 | HISTORY
The Pentagon is the Virginia headquarters of the U.S. Department of Defense, located in a massive five-sided concrete and steel building that’s a potent symbol of America’s military strength ...

WELCOME TO THE PENTAGON 2025 - whs.mil
THE PENTAGON Conceived in the summer of 1941, and completed at breakneck speed in only 16 months, the Pentagon initially fulfilled a seemingly conventional task. Covering nearly 29 acres, it provided much-needed office space for thousands of War Department employees scattered in buildings and temporary structures in Washington, D.C. and the surrounding region. On any given day in the years ...

The Pentagon - Simple English Wikipedia, the free encyclopedia
The Pentagon is the headquarters of the United States Department of Defense. It is in Arlington, Virginia (near Washington, D.C.). It has limestone walls. It is in the shape of a pentagon, and has seven floors. The Pentagon is the largest office building in the world, [5][6] but any place in the building can be reached within 7 minutes. Construction began on September 11, 1941. Exactly sixty ...