At the northern extremity of Caernarvon county, and projecting into the Irish Sea, is the promontory known as Great Orme's Head, and near it is the mouth of the Conway River. The railway to Holyhead crosses this river on a tubular bridge four hundred feet long, and runs almost under the ruins of Conway Castle, another Welsh stronghold erected by Edward I. We are told that this despotic king, when he had completed the conquest of Wales, came to Conway, the shape of the town being something like a Welsh harp, and he ordered all the native bards to be put to death. Gray founded upon this his ode, "The Bard," beginning-- "On a rock whose lofty brow Frowns o'er old Conway's foaming flood, Robed in a sable garb of woe. With haggard eyes the poet stood." This ode has so impressed the Conway folk that they have been at great pains to discover the exact spot where the despairing bard plunged into the river, and several enthusiastic persons have discovered the actual site. The castle stands upon a high rock, and its builder soon after its completion was besieged there by the Welsh, but before being starved into submission was relieved by the timely arrival of a fleet with provisions. It was in the hall of Conway Castle that Richard II. signed his abdication. The castle was stormed and taken by Cromwell's troops in the Civil Wars, and we are told that all the Irish found in the garrison were tied in couples, back to back, and thrown into the river. The castle was not dismantled, but the townsfolk in their industrious quarrying of slates have undermined one of the towers, which, though kept up by the solidity of the surrounding masonry, is known as the "Broken Tower." There was none of the "bonus building" of modern times attempted in these ponderous Welsh castles of the great King Edward. The ruins are an oblong square, standing on the edge of a steep rock washed on two sides by the river; the embattled walls, partly covered by ivy, are twelve to fifteen feet thick, and are flanked by eight huge circular towers, each forty feet in diameter; the interior is in partial ruin, but shows traces of its former magnificence; the stately hall is one hundred and thirty feet long. The same architect designed both Caernarvon and Conway. A fine suspension-bridge now crosses the river opposite the castle, its towers being built in harmony with the architecture of the place, so that the structure looks much like a drawbridge for the fortress. Although the Conway River was anciently a celebrated pearl-fishery, slate-making, as at Caernarvon, is now the chief industry of the town. [Illustration: FALLS OF THE CONWAY.] [Illustration: THE SWALLOW FALLS.]