Doctor Who: 20 Things You Didn't Know About Heaven Sent

4. The Castle Had Been Seen Before

Doctor Who Heaven Sent Peter Capaldi Twelfth Doctor
BBC Studios

Because constantly-changing castles don't exist in the real world, the Doctor Who team had to use regular old castles to film Heaven Sent in.

The two they chose - Caerphilly Castle and Cardiff Castle - had both appeared in Doctor Who before.

Caerphilly Castle was used as certain parts of the acid factory in The Rebel Flesh/The Almost People, and also for some of the underground tunnel scenes in The Vampires of Venice.

Doctor Who The Vampires of Venice
BBC Studios

Cardiff Castle was also used in The Rebel Flesh, and was also seen in the Torchwood episode Exit Wounds.

Has any other show done more for Welsh tourism than Doctor Who?

 
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Jacob Simmons has a great many passions, including rock music, giving acclaimed films three-and-a-half stars, watching random clips from The Simpsons on YouTube at 3am, and writing about himself in the third person.