Castell Carreg Cennen stands dramatically perched atop a 300-foot limestone crag overlooking the River Cennen near Llandeilo in Carmarthenshire, Wales. The castle's origins date to the 13th century under Welsh Princes of Deheubarth, though the surviving structures date from Edward I's late 13th-century castle-building campaigns in Wales. Managed by Cadw, the Welsh historic environment service, the castle has captivated visitors since its ruinous state began in 1462, commanding stunning views across the Carmarthenshire countryside. The dramatic hilltop position and fortified gatehouse, which served as the castle's keep, make it one of Wales' most spectacular castle locations, with nearby Llandeilo providing rail and bus access.