“The Power of Three” Filming Locations
Doctor Who episode “The Power of Three” was filmed in Cardiff & Newport in the United Kingdom.
7 Church Road as Amy & Rory's House
The Doctor lives with Amy & Rory for awhile.
Source: The Doctor Who Locations Guide
St. Cadoc's Hospital as Prince Royal Hospital
Rory works at the hospital.
Source: The Doctor Who Locations Guide
Caerphilly Castle as Henry VIII's Bedroom
Amy, Rory, and the Doctor hide under Henry's bed.
Source: The Doctor Who Locations Guide
Caerphilly Castle as UNIT Lab (exterior)
Kate Stewart escorts the Doctor and his companions into UNIT's secret research facility.
Source: The Doctor Who Locations Guide
Neath Abbey as UNIT Lab (interior)
Kate Stewart shows the Doctor what the various cubes are doing.
Source: The Doctor Who Locations Guide
Coedarhydyglyn as Rory's Dad's House
Rory's Dad makes detailed notes about the 'actions' of the cubes.
Source: The Doctor Who Locations Guide
Belle Vue Park (Penarth) as Playground
The Doctor examines a cube while sitting on a playground outside Amy & Rory's house.
Source: The Doctor Who Locations Guide
Coedarhydyglyn as The Savoy
The Doctor takes Amy & Rory to the recently opened Savoy hotel.
Source: The Doctor Who Locations Guide