Modern Marvels: The GREATEST Structures Ever Built *Marathon*

The engineering marvel Machu Picchu sits perched on a ridge in the Peruvian Andes. Originally built by the Incas, this magnificent structure remains a mystery. Was it an observatory? Pleasure retreat? Fortress? See more in this marathon from Modern Marvels. Love Modern Marvels? Stay up to date on all of your favorite The HISTORY Channel shows at http://history.com/schedule. #ModernMarvels Subscribe for more from Modern Marvels and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the show on our site: https://www.history.com/shows/modern-marvels Check out exclusive The HISTORY Channel content: History Newsletter - https://histv.co/newsletter Website - https://histv.co/History Facebook - https://histv.co/Facebook TikTok - http://bit.ly/4kZKjXi "Modern Marvels" goes beyond the basics to provide insight and history into things we wonder about and that impact our lives. 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.