The ruined remains of Llys Euryn sit upon a wooded shoulder of Bryn Euryn — a limestone hill on the outskirts of Rhos-on-Sea (Welsh: Llandrillo-yn-Rhos) in the county of Conwy, north Wales. Three sides of the building remain, with the remains of interior walls, a complete fireplace and chimney stack rising to around 50 feet, two other fireplaces and windows. More than anything else, its history makes this one of the more intriguing and important historical buildings in north Wales. https://en.wikipedia.org/wiki/Llys_Euryn