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Posted on Aug 18, 2025 / Travel

• The Pentagon is the world’s largest office building by floor area, with 6.5 million square feet of space.
• It has five concentric rings and five floors above ground, making its layout unique.
• The Pentagon was built in just 16 months during World War II.
• There are 17.5 miles of corridors inside the building.
• The Pentagon has its own metro station for employee and visitor access.
• The Pentagon Memorial honors the 184 victims of the September 11, 2001, attack.
• Its five-sided shape was designed to fit the irregular plot of land in Arlington.
• The building houses offices for the entire U.S. Department of Defense under one roof.
• The Pentagon has been reinforced and modernized multiple times to improve security and efficiency.

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