Did Da Vinci hide clues in his art? - Digging For The Truth | Sky HISTORY TV Channel

Did Da Vinci hide clues in his art? - Digging For The Truth

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What (or perhaps who) is the holy grail? And could a descendant for Jesus and Mary be walking the streets today? (Season 2, Episode 4)

Satellite image of connecting circle and octagon shapes over a gold course

The Circle Octagon: Ancient geometric marvel in America - Mysteries From Above

A painting depicting the Spanish conquest of the Aztec Empire

How the Spanish plundered the Aztecs - History's Greatest Mysteries

The Oak Island team being led into a old dungeon

A discovery in a Knight's Templar dungeon - The Curse of Oak Island

A man looking very concerned while staring at the sky

Reality crumbles for security guard faced with alien life - Encounter: UFO

An ancient Roman silver coin with two daggers as 'Eid Mar' on it

Ancient Roman coin shocks Rick: Will he buy or pass? - Pawn Stars

A large forest fire next to a dock area

Devastating Redding fire: 230 acres destroyed, $1.6 billion in damages - Mysteries From Above