Archwilio is the online access system to the Historic Environment Records (HERs) of Wales.It was developed in partnership by the four Welsh Archaeological Trusts and contains information for the whole of Wales. For more information visit

Please note that information obtained from Archwilio is intended for use for information and research purposes only and may not be used for development control purposes or as part of a commercial project. Enquiries of this nature should be addressed directly to HER staff.

Mae'r App Archwilio ar gyfer Android i'w gael i lawrlwytho o'r Google Play Store

For User Guide: CLICK HERE

To access Archwilio: CLICK HERE




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Gwynedd Archaeological Trust is certified to ISO 9001:2015 and ISO 14001:2015

To view a copy of the ISO 9001:2015 certificate, please click here.
To view a copy of the ISO 14001:2015 certificate, please click here.