13 Abandoned Cold War Bunkers Hiding Incredible Secrets

3. Kelvedon Hatch Secret Nuclear Bunker, UK: A Window into Regional Command

This unassuming bungalow in the Essex countryside hides the entrance to a massive, three-level underground bunker – a former Regional Government Headquarters (RGHQ). Designed to house hundreds of military and civilian personnel to run the region post-attack, Kelvedon Hatch is now a privately owned museum, preserved almost exactly as it was when decommissioned in 1992. Its secret lies in its authenticity: visitors walk through dormitories, command centers, and communication rooms filled with original equipment, offering a chillingly realistic glimpse into Britain's Cold War civil defence infrastructure.