China discovered America before Europe

Ancient ruins discovered in California

(History, Feb. 21, 2021) Just east of the San Francisco Bay are the Berkeley Mystery Walls (aka East Bay Rock Walls) -- remnants of a massive, stone wall that stretches a distance of over 50 miles. In "Marco Polo Discovers America" (Season 3, Episode 7) the History Channel looks at powerful evidence that China discovered America.

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AMERICA UNEARTHED with Host Scott Wolter uses hard science and intuitive theories to explain the most mysterious artifacts and sites in America. HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network's all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.