New Old Detroit

New Old Detroit was a city or planet in the Proxima System. The Tenth Doctor and Majenta Pryce visited there to investigate the murders of various aliens that lived on the planet. The Doctor eventually used the World Bomb to completely re-terraform the planet, turning New Old Detroit from a dangerous urban environment to a peaceful countryside modelled after that of England. (COMIC: The Deep Hereafter)

The planet was later renamed Redemption. At the end of their travels together, the Doctor dropped Majenta off on the planet for her to start her life anew. (COMIC: The Crimson Hand)