Tags: Military Structure.
White Castle (Welsh: Castell Gwyn) is a medieval castle located 1 mile (1.6 km) north of the village of Llantilio Crossenny in Monmouthshire Wales near the B4233 between Monmouth and Abergavenny. Known as one of the “Three Castles” with Grosmont and Skenfrith there has been a defensive structure at the site since the late eleventh century.