or Conway, a town of Caernarvonshire in North Wales, at the mouth of the Conway, as its name implies. It is finely situate on a steep slope, and is entirely enclosed by its lofty old walls of more than a mile in circuit, forming a triangle, and fenced with 24 round towers. It is a fine example of the style of fortification in the reign of Edward I.; and contains some curious half-timbered houses of Elizabeth's time, with the ruins of a Cisterian priory, and other objects of interest. The castle, which exhibits very extensive ruins, was built in 1284 by Edward I., and must have been one of the noblest fortresses in Britain.

An elegant suspension-bridge across the river (constructed by Telford), was opened in 1826; and the tubular bridge by Stevenson, the first of its kind, for the Chester and Holyhead Railway, was completed in 1848. The population in 1851 was 2105, chiefly occupied in the coasting trade and in shipbuilding. The pearl-mussel fishery which subsisted for a long period has been lately abandoned. It is one of the contributory boroughs to Caernarvon in returning a member to parliament. Distance from London, 224 miles. It is the ancient Comerium.