Niagara's Hidden Marvel

Exploring a royal retreat caught in a web of corruption, an engineering marvel hidden behind the Niagara Falls in Canada, and a subterranean treasure.

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Guest Stars

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Guest Stars

Sascha Auerbach

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Jim Meigs

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Rob Bell

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Dougal Jerram

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Lynette Nusbacher

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Dominic Selwood

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Alicia Gutierrez-Romine

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Katherine Landdeck

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