- You may be looking for the coffee shop.
A pyramid was a three-dimensional structure composed of three or four sides composed of (usually) triangular shapes.
One splinter of Scaroth claimed to have caused the pyramids to be built, (TV: City of Death) though the Doctor was sceptical of this claim. (PROSE: A History of Humankind) The Osirans also influenced the building of the pyramids, and other pyramids were definitely constructed by 'aliens'. (TV: Pyramids of Mars, PROSE: Dead Romance) Osiran war missiles were pyramid-shaped and used "pyramid power". (TV: Pyramids of Mars)
The Rings of Akhaten also had a pyramid, a holy site for the Sun-singers of Akhet, seven planets orbiting the same star, all of them sharing the belief that life in the universe originated on that pyramid. In it was a mummy. (TV: The Rings of Akhaten)
The Great Intelligence used a three-sided pyramid constructed from Yeti control spheres as its physical form, though it truly had no physical form, (TV: The Abominable Snowmen) and it used such a geometry for a machine able to absorb the Doctor's mind. (TV: The Web of Fear)
The Rani's TARDIS on Lakertya was disguised as a pink pyramid. (TV: Time and the Rani) Peri Brown reminds the Sixth Doctor that their TARDIS had also materialized as a pyramid once, "on the frozen plans of Ewa Nine". (TV: Vengeance on Varos)