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 Pembrokeshire from the border with Carmarthenshire westwards to Haverfordwest, then northwards to Fishguard. Some improvements have been made since the 1990s but others were still the subject of discussion in 2014. The A477 from St. Clears to Pembroke Dock is long, of which only are dual carriageway. The Cleddau Bridge carries the A477, connecting South Pembrokeshire with North Pembrokeshire, across the Cleddau Estuary. The A478 traverses eastern Pembrokeshire from Tenby in the south to Cardigan, Ceredigion in the north, a distance of . The A487 is the other major route, running northwest from Haverfordwest to St David's, then northeast following