Explore the hidden power centers of history in this Lost Worlds marathon. Go inside America’s secret A-bomb factories, uncover massive Cold War bunkers, and tour Henry VIII’s mega-structures—built to defend and dominate. #LostWorlds Subscribe for more from Lost Worlds and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Watch more Lost Worlds on YouTube in this playlist: https://www.youtube.com/playlist?list=PLob1mZcVWOaj48cu1Vqeuql39CUQoQPMS Check out exclusive The HISTORY Channel 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.