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Visiting Snowdonia

Harlech Castle


Caernarfon Castle

The building of Caernarfon Castle began in 1283, following the Edwardian Conquest of the Principality of Gwynedd. The present castle stands at the same site as an earlier castle commissioned by Hugh of Avanches, Earl of Chester in the 1090s. In 1294, Madog ap Maredudd, a distant relative of Llywelyn ap Gruffudd, lead a Welsh rebellion against Edward I and during this rebellion, substantial damage was caused to Caernarfon Castle, leading to extensive rebuilding work in 1296-c.1327.

Caernarfon Castle

Caernarfon Castle (© CADW)

Caernarfon Castle’s eight sided towers can still be seen today, rising above the Menai Strait and the towers’ horizontally placed multicoloured stones are reminiscent of styles seen at local Roman forts, reflecting Edward I’s imperialistic vision. The Caernarfon town walls are linked to the castle and measure a length of 734 metres. The castle and town walls were restored during the C19 and in 1986, they were classified as a World Heritage Site.


Caernarfon Castle is located on the shore of the Menai Strait, in the town centre.

Entrance Fee

There is an entrance fee.

Opening Times

Opening times varies throughout the year. Please contact CADW for more details.


Telephone: 01443 336000