​​What is Pentagon Building?

The Pentagon serves as the headquarters of the United States Department of Defense. As one of the world's largest office buildings, it has a floor space of 3,705,793 square feet or three times that of the Empire State Building in New York. The Pentagon houses a daily working population of approximately 24,000 employees, both military and civilian.  
The pentagon was designed in such a way that no part of the building is more than a 10-minute walk from any other point in the building. It was purposely built short. The Pentagon was built short due to two reasons: Steel was in short supply due to the Second World War, and they wanted to conserve steel. The designers apparently wanted to conserve the “view” of The Capitol across the Potomac and building it higher would ruin the view.

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