York's City Walls are the longest medieval town walls in England, encompassing the historic center of the city for over two miles. Built primarily in the 13th and 14th centuries on the foundations of Roman and Viking fortifications, the walls offer a unique elevated walking tour through York's history. Visitors can pass through the five main 'Bars' or gateways—Micklegate, Bootham, Monk, Walmgate, and Fishergate—each with its own distinct character and story. Walking the walls provides spectacular views of York Minster and the city’s complex web of medieval lanes, serving as a vital social and recreational space that connects modern York to its ancient past.