Castell Coch is a medieval castle renovated by the 3rd Marquess of Bute and architect William Burgess. It is largely a Victorian Gothic fantasy and like Cardiff Castle of stunning design. The castle is on the site of a medieval Norman castle that gradually fell into ruin. The renovation was completed in the late nineteenth century. The location is north of Cardiff - Caerdydd off the A470 to the north of Tongwynlais.
Link: Castell Coch Cadw