Pembroke Castle is a non-fortified structure.
In 1093 Arnulf of Montgomery built the first castle at the site when he fortified the promontory beside the Pembroke River during the Norman invasion of Wales .	Pembroke	Pembroke, Pembrokeshire	Wales	Wales	Arnulf of Montgomery	Arnulf of Montgomery	castle	castle	Pembroke River	Pembroke River	Norman invasion of Wales	Norman invasion of Wales
