Llanblethian Castle (Cadw)

Also known as St Quentin's or St. Quintin's Castle. Probably built by English nobleman and military commander Gilbert de Clare in the early 14th century, the most notable remnants of this castle are its huge, twin-towered gatehouse and high stretch of curtain wall on the north of the site. In the centre of what was once a large fortress is an earthen mound with the remains of a thick-walled building on top of it, which may be all that’s left of an earlier keep.