The Top 12 Most Heavily Fortified Locations on the Planet

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3) Cheyenne Mountain Complex (3 of 12)

Cheyenne Mountain Complex

3) Cheyenne Mountain Complex (3 of 12)

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The Cheyenne Mountain Complex initially served as a military installation with a nuclear bunker, which was located in Colorado Springs, Colorado. It served as the home base and headquarters for NORAD (North American Aerospace Defense Command).

It was one of the most heavily guarded and secure location on this planet at one time, but nowadays it has been opened publicly, which means that you can step inside and take a look at what was once one of the most heavily fortified places on the planet.

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