Visit a Berlin base for Nazi child soldiers and look inside an eccentric man's folly in Malaysia. Salute a Chicago building that inspired a generation of performers, then learn how a tragic San Francisco facility became the toast of a nation.

Explore a clandestine Japanese facility that became a deadly wartime training camp, then get chills in an Italian ghost town levelled by a natural disaster. Hop aboard the world's biggest battleship and chip away at a Napoleonic-era English fortress.

Get a glimpse of a tower on the Thames that witnessed London’s darkest days and peek inside a Wisconsin brewery plagued by violent teetotallers. Find clues about a massacre on a Greek island, then discover a scenic Seattle park’s scandalous past.

Investigate a Michigan air base where a UFO cover-up allegedly took place, then wander through a wonderland built by a shady entrepreneur. Explore a California civil rights mecca and a Croatian cliffside citadel that influenced the fate of a nation.