Carved into the bedrock deep below Helsinki is a series of underground bunkers where the entire city’s population can shelter ...

A California man was arrested after authorities said they discovered an underground fortified bunker with an "alarming cache of illegal firearms and ammunition" inside. Michael Kamfolt, 40, of ...

Buried deep inside Cheyenne Mountain Complex, the Cold War’s most hardened command center was designed to survive nuclear war. Yet by the time it was fully operational, advances in missile accuracy ...