Castell Coch is a 19th-century Gothic Revival castle built on the remains of a genuine 13th-century fortification. It is situated on a hillside near the village of Tongwynlais, in the north of Cardiff in Wales.

Castell Coch has made numerous appearances in TV and film productions. One of its earliest was in the 1954 Hollywood movie The Black Knight, starring Alan Ladd. The movie used the legend that a secret tunnel existed between Castell Coch and Cardiff Castle. In the 1980s it was used as the stronghold of Michael, Duke of Strelsau in a BBC adaptation of the The Prisoner of Zenda.

Other TV productions include The Worst Witch, Tracey Beaker’s Movie Of Me and Robin Hood.

Opening times
01.04.09 - 31.10.09: Monday - Sunday 9.00 - 17.00

01.11.09 - 31.03.10: Monday - Saturday 9.30 - 16.00, Sunday 11.00 - 16.00