Dolbadarn Castle is a fortification built by the Welsh prince Llywelyn the Great during the early 13th century, at the base of the Llanberis Pass, in northern Wales. The castle was important both militarily and as a symbol of Llywelyn's power and authority. The castle features a large stone keep. In 1284 Dolbadarn was taken by Edward I of England, who removed some of its timbers to build his new castle at Caernarfon. The castle was used as a manor house for some years, before falling into ruin. It is now owned by Cadw and managed as a tourist attraction, and is protected as a grade I listed building.