coastal resort, Bridgend county borough, historic county of Glamorgan (Morgannwg), Wales. Situated on a low limestone headland overlooking the Bristol Channel, Porthcawl originated as a coal port during the 19th century, but its trade was soon taken over by more rapidly developing ports such as nearby Barry. Northwest of the town, in the dunes known as Kenfig Burrows, are hidden the last remnants of the town and castle of Kenfig, which were overwhelmed by sand about 1400. Porthcawl is a leading holiday resort in southern Wales and has one of the largest trailer parks in Europe. Tourist attractions in the area include sandy beaches, a Grand Pavilion, a miniature railway leading to Coney Beach (modeled after Coney Island in New York City), and a golf course. Pop. (2001) 15,869.