The Claws of Axos standard. The story includes interior scenes inside the TARDIS for the first time in the Pertwee era of the show. The configuration of the TARDIS set-up is unique for this adventure. The TARDIS monitor appears to be a circular screen embedded in one of the 'roundels' in the console room wall, rather than the traditional rectangular screen (this feature is seen again once, a year later, on the unique set built for "The Time Monster"). The doors of the console room do not open directly into the exterior as in all other adventures; instead they open into a corridor that
Culwalla Homestead and most are of the colonial twelve paned pattern. Windows to the two front rooms have cedar panels extending twelve paned pattern. Windows to the two front rooms have cedar panels extending from the sill to the floor. All chimney pieces are cedar fluted with roundels except one which is white marble. Three chimney pieces have roundels at the corners and fluting with wide simple mantle shelf. The largest front room has a white marble chimney piece with classical console brackets. All fireplaces have elegant cast iron inserts and grates. All cedar to the main rooms is polished including skirtings