The original TARDIS interior.
We like to refer to it as a flat-pack kind of TARDIS because this nifty set is taken apart and put back whenever and wherever it wants. If there’s not enough room in the studio for the whole thing, they could just put up one wall and the console etc. Or seen in the bottom picture William Hartnell is even pretending to pull levers on the console that isn’t there. This meant more space for other sets.
And it’s shot from all angles and directions which gives the effect that there is a lot more space than there actually is. The doors can be shot on all sides. One thing we particularly love is that the doors do not match the outside doors. The classic TARDIS interior did not give any hint of the ordinary police box exterior, and the doors would open with a flick of a switch.
By the end of season two, you could see how battered the interior looked from being shifted about and put up and taken apart all the time. Some of the roundels looked punctured. But despite the lack of money, the ship always managed to look alien like, and also large enough to be a convincing travelling machine and a home. It had beautiful decor with interesting objects, old fashioned things that contrasted so well with the white focus, and the banks of computers and scanner screen.
Other rooms in the TARDIS were the bedrooms with fold out orthopedic beds, and a sitting room, and a food machine station, and a modest (actually quite small) wardrobe.
The original designers did not have anything to go on, they created this stunning design from scratch and it suits the first Doctor so well. The wandering alien in Edwardian dress living and drifting in a futuristic space ship with his granddaughter. They did such a terrific job.