Grosmont Castle is a Norman stone fortress located in South Wales. It's near the River Monnow, by the English border, and forms part of a trio of castles.

Built in the late 11th century, it formed part of the defensive strategy along the Welsh Marches, alongside nearby Skenfrith and Grosmont.

Cilgerran Castle stands above a steep gorge of the River Teifi in west Wales. Built in the early 13th century, it played a key role in defending the contested borderlands between Norman lords and native Welsh rulers.

Beaumaris Castle is an unfinished masterpiece of medieval military design, located on the Isle of Anglesey in North Wales.