Caerphilly Castle is a heritage property in Caerphilly, Wales, United Kingdom seen on screen in Doctor Who (The End of Time) (2009), Merlin (2008).
Location: Caerphilly, Wales, United Kingdom
Verified facts
- Located in Caerphilly, Wales
confidence 75/100 · 3 independent sources · SRC-10891, SRC-10892, SRC-11317 - Appeared in Doctor Who (The End of Time) (tv, 2009)
confidence 75/100 · 3 independent sources · SRC-10891, SRC-10892, SRC-11129 - Appeared in Merlin (tv, 2008)
confidence 75/100 · 3 independent sources · SRC-10892, SRC-10891, SRC-12368 - Built 1268–1290
confidence 85/100 · 3 independent sources · SRC-10891, SRC-11317, SRC-11755 - Architectural style: Medieval concentric castle
confidence 70/100 · 2 independent sources · SRC-10891, SRC-11317 - Historic designation: Grade I Listed Building; Scheduled monument (GM002)
confidence 75/100 · 3 independent sources · SRC-10891, SRC-11317, SRC-11754 - Owned by Cadw (Welsh Government / the state) (1950–present)
confidence 85/100 · 3 independent sources · SRC-10891, SRC-11317, SRC-11755 - Designed by Built by Gilbert de Clare (architect unknown)
confidence 90/100 · 4 independent sources · SRC-10891, SRC-11317, SRC-11754, SRC-11755 - Appeared in Doctor Who (movie, 2009)
confidence 75/100 · 3 independent sources · SRC-10891, SRC-10892, SRC-11756 - Appeared in Doctor Who (Robot of Sherwood) (tv, 2014)
confidence 70/100 · 2 independent sources · SRC-12014, SRC-11756 - Appeared in Doctor Who (The Vampires of Venice) (tv, 2010)
confidence 70/100 · 2 independent sources · SRC-12015, SRC-11756
Evidence & sources
- SRC-10891 — https://en.wikipedia.org/wiki/Caerphilly_Castle (Tier 1, reference; retrieved June 2026)
- SRC-10892 — https://www.visitwales.com/things-do/attractions/tv-and-film-locations/lights-camera-actio (Tier 3, reference; retrieved June 2026)
- SRC-11129 — Countryfile.com (BBC) — Doctor Who filming locations (Tier 2, reference; retrieved June 2026)
- SRC-11317 — https://cadw.gov.wales/visit/places-to-visit/caerphilly-castle (Tier 1, reference; retrieved June 2026)
- SRC-11754 — Cadw Scheduled Monument Full Report (GM002) (Tier 3, reference; retrieved June 2026)
- SRC-11755 — World History Encyclopedia (Tier 2, reference; retrieved June 2026)
- SRC-11756 — The Locations Guide to Doctor Who (doctorwholocations.net) (Tier 2, reference; retrieved June 2026)
- SRC-12014 — https://en.wikipedia.org/wiki/Robot_of_Sherwood (Tier 1, reference; retrieved June 2026)
- SRC-12015 — https://en.wikipedia.org/wiki/The_Vampires_of_Venice (Tier 1, reference; retrieved June 2026)
- SRC-12368 — Visit Wales (wales.org) — Caerphilly Castle Visiting Guide (Tier 2, reference; retrieved June 2026)
How we verify
Every fact above is independently corroborated by at least two reputable sources and
confidence-scored before publication. Claims that cannot clear that bar are withheld. We show the
street address only for non-residential public landmarks (museums, commercial and civic buildings,
publicly documented filming-location sites); the exact addresses of private residences and any
personal information are structurally barred from publication. Last reviewed June 2026.
Frequently asked questions
Where was Doctor Who filmed?
Caerphilly Castle, in Caerphilly, Wales, is a real-world filming location used for Doctor Who. This property has also appeared on screen in Merlin.
Where was Merlin filmed?
Caerphilly Castle, in Caerphilly, Wales, is a real-world filming location used for Merlin. This property has also appeared on screen in Doctor Who.
Who designed Caerphilly Castle?
Caerphilly Castle was designed by Built by Gilbert de Clare (architect unknown).
Where is Caerphilly Castle located?
Caerphilly Castle is located in Caerphilly, Wales.