Lauretta Sung

Written by Lauretta Sung

Modified & Updated: 19 May 2024

Sherman Smith

Reviewed by Sherman Smith


The Pentagon, one of the most iconic symbols of the United States military, holds a rich history and numerous fascinating facts. From its architectural design to its historical significance, the Pentagon has captured the imagination of people around the world. In this article, we will delve into 11 intriguing facts about the Pentagon, shedding light on its compelling story and unique features. Whether you're a history enthusiast, a military buff, or simply curious about this renowned structure, these facts are sure to pique your interest and provide a deeper understanding of the Pentagon's place in American history and culture. Join us as we embark on a journey through time and explore the hidden gems of this legendary edifice.

Key Takeaways:

  • The Pentagon is the world’s largest office building, completed in just 16 months during World War II, and houses a memorial dedicated to the victims of 9/11.
  • The Pentagon features a unique design with five concentric pentagonal rings, twice as many bathrooms as necessary, and its own metro station, showcasing its fascinating history and structure.
Table of Contents

The Pentagon is the world’s largest office building.

The Pentagon, located in Arlington, Virginia, is a colossal architectural marvel that serves as the headquarters of the United States Department of Defense. With a total floor area of approximately 6.5 million square feet, it stands as the largest office building in the world. The sheer scale of the Pentagon is a testament to the immense operations and organizational infrastructure housed within its iconic five-sided walls.

The construction of the Pentagon was completed in just 16 months.

During the height of World War II, the urgent need for a centralized command center prompted the remarkable feat of constructing the Pentagon in a mere 16 months. This remarkable achievement was made possible through the collaborative efforts of thousands of workers and the implementation of innovative construction methods. The expedited construction of the Pentagon underscores the unwavering determination and resourcefulness exhibited during a pivotal moment in history.

The Pentagon has twice as many bathrooms as necessary.

In a peculiar quirk of its architectural design, the Pentagon boasts approximately twice as many bathrooms as required for its immense workforce. This unique feature has sparked curiosity and fascination, adding an intriguing dimension to the already captivating history and structure of the Pentagon.

The Pentagon houses a memorial dedicated to the victims of 9/11.

Within the hallowed halls of the Pentagon, a poignant memorial stands as a tribute to the lives lost during the tragic events of September 11, The solemn memorial serves as a poignant reminder of the enduring impact of that fateful day and honors the individuals who perished within the Pentagon and aboard American Airlines Flight 77.

The Pentagon has its own metro station.

Serving as a vital transportation hub, the Pentagon is directly linked to the Washington Metro system through its own dedicated metro station. This strategic connectivity facilitates the seamless movement of personnel and reinforces the Pentagon's pivotal role in the nation's defense infrastructure.

The Pentagon was originally designed to be only temporary.

When the ambitious plans for the Pentagon were conceived, its initial purpose was envisioned as a temporary solution to accommodate the escalating demands of a nation at war. However, the enduring significance and functionality of the Pentagon have solidified its status as an enduring symbol of military might and strategic command.

The Pentagon features five concentric pentagonal rings.

The distinctive architectural layout of the Pentagon comprises five concentric rings that radiate from the central courtyard. This innovative design optimizes the efficient flow of communication and logistics, reflecting the meticulous planning and foresight embedded within its structure.

The Pentagon has its own post office.

Embedded within the expansive confines of the Pentagon, a fully functional post office caters to the diverse mailing needs of its occupants. This self-contained postal service underscores the self-sufficiency and comprehensive amenities available within the Pentagon.

The Pentagon’s construction required the relocation of an entire cemetery.

The ambitious construction of the Pentagon necessitated the relocation of the historic Arlington National Cemetery, a profound testament to the magnitude of the project and the sacrifices made to realize its completion.

The Pentagon employs over 23,000 employees.

As the nerve center of the United States military, the Pentagon accommodates a vast workforce comprising military personnel, civilian employees, and support staff. The diverse array of roles and responsibilities within the Pentagon underscores its pivotal role in shaping national defense strategies and operations.

The Pentagon houses a diverse array of military artifacts and artwork.

Enriching its storied halls with a rich tapestry of history and culture, the Pentagon showcases an extensive collection of military artifacts and artwork. These treasures serve as poignant reminders of the nation's heritage and the valor of those who have served in defense of freedom.

The Pentagon stands as an enduring symbol of national defense and strategic command, embodying a legacy of resilience, innovation, and unwavering dedication to safeguarding the nation's security. From its remarkable construction timeline to its poignant memorials, the Pentagon continues to captivate the imagination and inspire reverence for the sacrifices and triumphs woven into its storied history. As a beacon of strength and unity, the Pentagon remains an indelible testament to the resilience and fortitude of the human spirit in the face of formidable challenges.


In conclusion, the Pentagon stands as a symbol of American military power and innovation, with a rich history and numerous intriguing facts. From its unique design to its significant role in shaping global events, the Pentagon has left an indelible mark on the world. Exploring the lesser-known aspects of this iconic structure sheds light on its fascinating story and its enduring significance in the realm of military and political history.


What is the significance of the Pentagon's five sides?
The five-sided design of the Pentagon holds symbolic importance, representing the unity and coordination among the five branches of the U.S. military – the Army, Navy, Air Force, Marine Corps, and the Coast Guard.

How has the Pentagon evolved since its construction?
Over the years, the Pentagon has undergone various renovations and modernizations to accommodate the changing needs of the military and technological advancements. These updates have ensured that the Pentagon remains a functional and strategic hub for the U.S. Department of Defense.

From its role as a global military command center to housing historical artifacts, the Pentagon captivates visitors with an array of intriguing facts. Delving into the building's unique architecture and storied past offers a glimpse into one of America's most iconic landmarks. For those eager to explore more fascinating tales, our article on "40 Facts about the movie The Post" provides an enthralling look at the groundbreaking film that chronicled the Washington Post's decision to publish the Pentagon Papers.

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