Simeon Ellerton spent years building a house out of stones he found and carried home, one by one. Rejected by his one true love, Edward Leeskalnin spent decades erecting a bizarre monument for her, built of giant coral stones in Florida. But what exactly motivated these guys? How did they stick with their strange obsessions, and what mysteries surround them in the modern day? Tune in to learn more.

CLASSIC: The Night Witches: How an All-female Soviet Bomb Squad Terrorized Nazi Germany
31:35

Mata Hari: Courtesan Turned WWI Double Agent?
36:53

That Time We Made Backpack Nukes
31:27