The Castles and Town Walls of King Edward in Gwynedd refers to a UNESCO-designated site of patrimony located in Gwynedd, Wales.
In 1986, four castles related to the reign of King Edward I of England were proclaimed collectively as a World Heritage Site, as outstanding examples of fortifications and military architecture built in the 13th century.
Sites designated were:
In addition to these, Edward I entirely built or rebuilt four castles in north and mid-Wales: Aberystwyth, Builth, Flint and Rhuddlan. He also repaired the Welsh castles of Castell y Bere, Criccieth, Dolwyddelan, and Caergwrle. Chirk, Denbigh, Hawarden, Holt, and Ruthin were lordship castles built for Edward.
