Coflein – – is the online database for the National Monuments Record of Wales (NMRW), the national collection of information about the historic environment of Wales. The name is derived from the Welsh cof (memory) and lein (line).

Coflein allows access to details of many thousands of archaeological sites, monuments, buildings and maritime sites in Wales, together with an index to the drawings, manuscripts and photographs held in the NMRW archive collections. A growing number of online images are also available through the service. Sites can be displayed either on Ordnance Survey maps and queried geographically, or can be displayed as a series of text references. The data can be searched by location (place name, area or Ordnance Survey map sheet), by type (the classification or function of a site, monument or building) or by keyword.

Coflein is available as an English language database. A Welsh language version is being developed. This introduction and the help pages are currently available in either English or Welsh.

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