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)

Archive footage of a plane's nose

Was this mysterious plane crash a political hit? - Secrets In The Ice

A circular island in the middle of a swamp

This island moves on its own! - What On Earth?

Three stereotypical alien figures with a bright light behind them

They were abducted by aliens! - Alien Chronicles: Top UFO Encounters

Rendering of a stone circle

Is this King Arthur’s legendary round table? - What On Earth?

Digital rendering of a mysterious structure buried in the side of an iceberg

Mysterious structure spotted buried in an iceberg - Secrets in the Ice

Adolf Hitler and Eva Braun

Did he really escape? - What On Earth?