The Canterbury City Walls are an exceptionally preserved historical landmark that traces the boundary of the medieval city, standing on the foundations of the ancient Roman walls of Durovernum Cantiacorum. Originally built in the 3rd century AD, they were significantly reinforced throughout the Middle Ages to protect the cathedral city. Walking the circuit of the walls provides a unique perspective through Canterbury’s complex history, passing through beautiful parks like the Dane John Gardens and several historic gateways. They remain a vital social and recreational cornerstone of the city, offering a profound and atmospheric link to the defensive heritage that shaped Canterbury's layout.