The Trisected Abutment Reality Disconnect, also nicknamed the Ship and the Open Forgotten Door, was Dr. Jon St. Myth's home. It originated as a life raft from one of the great Ships his people built to explore beyond the cosmological horizon. Jon St. Myth stored it in an octagonal 1894 Glasgow-style police box with an crenellated roof and a Victorian gas lamp.
Geometrically, the Ship had the structure of an inwardly iterated, tetrahedral Koch snowflake: despite its finite size, it had an infinite number of rooms, recursively smaller. Its occupants would shrink in size as they walked through the doors.
Any authorised user was able to telepathically bond with and access it, and the Ship would change to match information from the user's mind. Its other features included a Hostile Action Displacement System, which predicted and protected itself from danger before it actually happened; as a side effect of this technology, the T.A.R.Dis could also travel through time and space. (PROSE: Blood Heat Second Iteration)