New Paris was an Earth colony on Venus. It was considered "the showplace of the Solar System".
History
In 2400, the Daleks attacked and conquered New Paris. They enslaved its population and converted the city into their work camp and headquarters. (COMIC: Invasion of the Daleks)
References
Adrian Wall said that Bratheen Traloor's house was the size of New Paris. (AUDIO: Professor Bernice Summerfield and the Stone's Lament)