Scheduled Monuments in Pembrokeshire along with a wide variety of post-medieval sites from coalmines, kilns and dovecotes through to World War II defensive structures. Scheduled Ancient Monuments (SAMs) have statutory protection. The compilation of the list is undertaken by Cadw Welsh Historic Monuments, which is an executive agency of the National Assembly of Wales. The list of scheduled monuments below is supplied by Cadw with additional material from Royal Commission on the Ancient and Historical Monuments of Wales and Dyfed Archaeological Trust. Scheduled Monuments in Pembrokeshire Pembrokeshire is the fifth-largest county in Wales, but has more Ancient Monuments (526) than any except Powys. This
Pembrokeshire features was a key factor in the establishment of the Pembrokeshire Coast National Park and a number of sites of special scientific interest (SSSIs). In the north of the county are the Preseli Hills, a wide stretch of high moorland supporting sheep farming and some forestry, with many prehistoric sites and the probable source of the bluestones used in the construction of the inner circle of Stonehenge in England. The highest point is Foel Cwmcerwyn at , which is also the highest point in Pembrokeshire. Elsewhere in the county most of the land (86 per cent according to CORINE) is