Splendorosa
Splendorosa was a leisure planet once visited by the Tenth Doctor and Donna Noble.
There was a floating city called Coral City on the planet. Intrigued by the city, the Doctor went undercover at GeoCorp, the company responsible for the city's position in the sky. He came into conflict with the company's CEO, Volsairius Trefgar, after he and Donna uncovered a plot to "steal" Splendorosa by Trefgar and the war-like Sarriflex, who intended to transport the planet to a galaxy at war in order to use it as a weapon. The Doctor stopped them by disrupting their ships, bringing Coral City back to the land in the process. However, he and Donna, instead of being honoured for saving the population from a deadly war, were chased out of the city by a lynch mob, as the population had grown fond of "living in the sky". (PROSE: Grand Theft Planet!)