Clwyd-Powys Archaeology


What is the Historic Environment Record?

CPAT’s Regional Historic Environment Record (HER) is a database and archive of information about sites and projects of archaeological and historical interest within the Clwyd-Powys area. We have records of archaeological sites from all periods, ranging from the earliest known human habitation in Wales,  to relatively modern features such as World War Two military structures. We hold information about Listed Buildings and structures, Scheduled Ancient Monuments, individual find spots, and other archaeological features, from well-known and much-visited sites to less obvious landscape features such as field banks and cultivation marks.

Visit Us

Members of the public are welcome to visit the HER. Visits are by appointment between Mon-Fri from

10 am to 4 pm. Please email us at or call 07956585023 to book a visit.


You can contribute to the Historic Environment Record from your device using ArcGIS Survey123

Submit a new record

Historic Environment Record

The area covered by CPAT’s Historic Environment Record is shaded dark blue on this map of Wales

The area covered by the HER is rich in history and archaeology. Our database holds records of over 180,000 sites and projects and is continuously updated. Every day professional fieldwork and research, academic projects, and discoveries by the public bring to light new information about the archaeological resource. A full-time HER officer is employed to keep the records up-to-date. Work on the Historic Environment Record is supported by Cadw and monitored by the RCAHMW. The HER has been adopted by each of our local authorities and is used by their planning directorates.

Online HER Records

It is possible to access the Historic Environment Records (HERs) of Wales online from the comfort of your own home, office or indeed windswept hilltop (signal permitting)!

Archwilio is the online access system to the Historic Environment Records of Wales. It has been developed through a partnership of the four Welsh Archaeological Trusts to provide wider public access to this valuable resource. If you are interested in researching your local area or finding out more about a particular historical period, this is a good place to start.

Historic Environment Record


IMPORTANT NOTE!  Information obtained from Archwilio is intended for use for information and research purposes only and must not be used for development control purposes or as part of a commercial project. Please use the HER enquiry form to submit your commercial enquiry. This form can also be used for research enquires that are complex and for which Archwilio may be unsuitable.








Alongside the data in the HER, we have access to substantial quantities of paper archives, maps and other supporting information. Particularly worthy of mention is a large collection of oblique aerial photographs which have been taken of archaeological remains and surrounding landscape over the last 30 years.

The Historic Environment Record is a valuable source of information for anyone interested in the archaeology and history of the north-east and mid- Wales, be they a local person, a visitor to the area, or a student, and whatever their level of interest. The HER has great potential as a source of raw data for research and analysis. It also plays a very important role in assisting with the management and presentation of the historic landscape and is used on a day-to-day basis by individuals, organisations and local authorities to assess the archaeological implications of proposed developments in the area.