Today, AD joins architect Nick Potts in London to uncover the city's ancient Roman origins. Before London, there was Londinium, the capital of Roman Britain, and although it was abandoned by AD 450, the influence and some remnants of the ancient city still remain. Join Potts as he explores how modern London rose up from Roman ruins. An Entire Roman City Is Hidden Beneath London | Walking Tour | 10:01 Architectural Digest | 7.37M subscribers | 192,282 views | April 22, 2025