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)

Alice Roberts holding a 1,000 year old viking poo

The gross but invaluable Viking artefact found in the UK - Britain's Most Historic Towns

The Grand Canyon

Is there a secret portal to another world hidden in the Grand Canyon? - National Park Mysteries

A woman wearing a red top next to a black and white drawing of two young princes

Who killed the princes in the tower? - Royal Bastards: Rise of the Tudors

Alice Roberts wearing a torch attached to a helmet

Remarkable evidence of Roman activity underneath English town - Britain's Most Historic Towns

The sun rises on the horizon with the wing of a commercial plane in the foreground

UK pilots call in inexplicable UFO sighting over Ireland! - Craig Charles UFO Conspiracies

The Apollo 11 team quarantine inside a metal container after their historic lunar mission

Could the world's deadliest virus come from space? - Book of Secrets