Why It's Impossible to Replicate the Pantheon Today

The Pantheon in Rome has stood for nearly 1,900 years with the largest unreinforced concrete dome ever built. Despite all of modern engineering's advances, we could not build this structure again today, at least not the way the Romans did. This documentary explores the engineering secrets, the lost materials, the self-healing concrete, and the modern regulations that make a true replica impossible. #pantheon 00:00 Intro 01:57 Roman Concrete And Its Strange Secret 05:31 The Dome's Brilliant Engineering 09:39 Why Modern Codes Make It Impossible 11:00 The Lost Mystery Of Roman Formwork 12:27 The Oculus, Drainage, And Lasting Design 14:50 How The Pantheon Shaped Later Architecture 16:01 Roman Concrete Vs Modern Carbon Costs 17:08 Why A True Replica Is Still Beyond Us 18:05 A Message From Ancient Rome 18:46 Outro