Astroville Seven was a 31st-century spaceship.
Immediately after the events on Lanzarote, the Fifth Doctor took Peri Brown to Astroville Seven, where she saw many different alien races and got a taste of what travelling in the TARDIS was like. While on the station, they got caught up in an epic quest for the legendary treasure of Rovan Cartovall. (PROSE: The Ultimate Treasure)