Maruthea

Maruthea was a planet / space station in the dead centre of the space-time vortex, supposedly an impossibility. (COMIC: Party Animals, The Incomplete Death's Head)

The Seventh Doctor repeatedly tried to travel to Maruthea, but "the old girl led him astray" and he instead ended up in various other places, such as becoming embroiled in a conflict between the Draconians and the Daleks. (COMIC: Nemesis of the Daleks)

The Doctor and Ace eventually reached the planet in time for Bonjaxx's birthday in his bar. A future incarnation of the Doctor and his companion Ria were also there for the party. (COMIC: Party Animals)