#49: Cheyenne Mountain

Nestled in Colorado, the Cheyenne Mountain Complex is a formidable U.S. military fortress embedded within a mountain. This multipurpose facility has served as the nerve center for NORAD, U.S. Space Command, ADCOM, and other crucial military and civil agencies.

It epitomizes national defense and emergency preparedness, providing a secure, fortified location for coordinating defense operations. The complex’s robust design includes blast doors and advanced communication systems, ensuring it can function even during nuclear threats.