Discover the world's most hidden and exclusive locations, shrouded in secrecy and mystery.
Known for its tight security and UFO conspiracy theories, Area 51 is a highly classified remote area of Edwards Air Force Base. Its real purpose remains a secret.
Home to the Catholic Church's most treasured documents, the Vatican Secret Archives are tightly controlled and only accessible to a few.
North Sentinel Island is off-limits to visitors to protect its indigenous people, who have lived in isolation for 60,000 years.
Mezhgorye is a closed town in Russia suspected to house nuclear missiles and a secret underground facility.
A secretive underground bunker intended as the site of U.S. government continuity during catastrophic events.