The Knights Templar: Top Secrets Revealed | Cities of the Underworld (Season 1)

A secret society known as the Knights Templar is believed to have influenced major groups throughout history. Find out more in this clip from Season 1, "Templars and the Founding Fathers." Watch all new episodes of Cities of the Underworld, returning, Tuesdays at 10/9c, and stay up to date on all of your favorite The HISTORY Channel shows at history.com/schedule. #CitiesoftheUnderworld Subscribe for more from Cities of the Underworld and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Check out exclusive HISTORY content: History Newsletter - https://histv.co/newsletter Website - https://histv.co/History Facebook - https://histv.co/Facebook Twitter - https://histv.co/Twitter 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.