Across the globe, certain locations seem to resist explanation — from Japan's infamous "suicide forest" and enigmatic Knights Templar tunnels, to a top-secret wartime compound in Virginia. Each holds clues to mysteries that have endured for generations.

Across the globe, certain locations seem to resist explanation — from Japan's infamous "suicide forest" and enigmatic Knights Templar tunnels, to a top-secret wartime compound in Virginia. Each holds clues to mysteries that have endured for generations.