It takes about two hours to circumnavigate York along it's beautifully preserved Medieval walls. The City Walls have five main "bars" or gateways, a Victorian gateway, a "postern" or small entrance, and 45 towers. Someone has taken the trouble to estimate the total weight of the wall at 100,000 metric tonnes. After asking myself, how did they do that, I had to also ask, why would anyone bother? Nevermind. It's a great walk with terrific views.

