No visit to York would be complete without a walk around the City Walls. At 3.4 kilometres long, the beautifully preserved walls are the longest medieval town walls in England. About 2.5 million people walk along all or part of the City walls each year, enjoying some amazing views. The completion of the entire circuit will take approximately 2 hours. There are five main bars or gateways, one Victorian gateway, one postern (a small gateway) and 45 towers.