White Castle - Castell Gwyn is a twelfth century castle on an earlier Norman site. The remains seen today are mainly from the thirteenth century with outer bailey defences and include large twin towered gatehouse and four D-shaped towers surrounded by a moat. The site is close to the village of Llantilio Crossenny, Monmouthshire, Wales (Welsh: Llandeilo Gresynni, Sir Fynwy, Cymru) about eight miles northeast of Abergavenny (Welsh: Y Fenni) off the B4521 road.
Link: Cadw - White Castle
Image: White Castle image courtesy of Cadw