Toowoomba was located in Australia, near Brisbane. Tegan Jovanka's father owned a sheep farm just outside Toomwoomba. (AUDIO: The Butcher of Brisbane [+]Loading...["The Butcher of Brisbane (audio story)"], TV: Logopolis [+]Loading...["Logopolis (TV story)"])
According to the Second Doctor, it was one of only six cities given "permanent display" status by the Galactic Preservation Council, along with Prague, Budapest, Paris, London and Second Carnac. (PROSE: The Time Eater [+]Loading...["The Time Eater (short story)"])