Caernarfon's town walls are part of the same UNESCO inscription as the castle and were built in the same campaign of 1283 to 1295. Eight towers and two twin-towered gateways punctuate just under a kilometre of fortification, enclosing the small grid of streets the English laid out on the bank of the Seiont. They are among the most complete medieval town walls in Britain.
Two stretches are open to the public for walking on top: a long section on the western, seaward side, and another along the southern wall. Access is via the castle's Queen's Gate or the steps near Porth yr Aur. From the wall walk you look directly down into the medieval streets on one side and across the Menai Strait to Anglesey on the other.