Cyfarthfa Castle References Cyfarthfa Castle castle, Wales, United Kingdom Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Merthyr Tydfil…of a former ironmaster’s mansion, Cyfarthfa Castle (1824−25), which now houses a museum and an art gallery. Read More…of a former ironmaster’s mansion, Cyfarthfa Castle (1824−25), which now houses a museum and an art gallery. Read More