Astrolabus's TARDIS

 was the preferred method of travel for the rogue Time Lord, Astrolabus. As with all TARDISes, it could travel in both time and space. Astrolabus used this to plunder many treasures from the Earth's past.

While Astrolabus was recovering Voyager's star charts, his TARDIS took the shape of a lighthouse. The Sixth Doctor followed Astrolabus back to it from Antarctica.

Once there, Astrolabus altered the Doctor's perception so that he though he was hanging from the top of the tower when in fact he was at the edge of a table, with his feet touching the ground.

The Doctor eventually realised the lighthouse was a TARDIS and tried to escape. He found his journey hiindered by black tentacles that grabbed him as he passed. He managed to jump through the door.

Astrolabus then turned his TARDIS into a rocket and left Earth, disappearing in an explosion. (DWM: Voyager)