Built in 1305, the castle has a chequered history. Edward Bruce, brother of the more famous Robert, came here in 1316 and captured the castle. He had been offered the high-kingship of Ireland but was eventually to be defeated. The Red Earl retook it in 1318 but de Burgo power collapsed shortly afterwards and it fell into O'Donnell hands, to be much besieged. In 1555, Cealbhack O'Donnell took the field against his father and damaged the castle badly. The ruined castled continurd to be a prize, however, and in 1608 was granted to the planter, Sir Authur Chichester, with the whole of the Inishowen Peninsula. It continued to be used until the end of the 19th cnetury as part of the defence of Lough Foyle, which was regarded as one of the main outer defensive positions of home waters by the British Navy. The ruins are extensive enough to command interest; they include the twin-towered three storey entrance gate; most interesting are the square north gate tower fitted with spiral staircase, and large polygonal tower at the north east, firmly placed on the roch outcrop where it was built to take advantage of a natural defensive position.

Shrove - a favourite walk in Shrove is a Port-a-doris - Port of the Door. The "Door" to the lovely cave is a natural arch. There is a wishing well shere those who drink the water are said to have their wishes granted. Near Shrove is an ancient cross-inscribed pillar stone and a small modern cross. A spring dedicated to St. Columcille spouts near the stone. The saint is said to have stopped here for water on his way to Iona.