Las Vegas

Las Vegas was a city in the American state of Nevada, which the Doctor and his friends occasionally visited.

The Tenth Doctor and Heather McCrimmon, for instance, visited Deep Ocean, a huge, Luxembourg-sized underground biosphere that had been constructed in the city. There, the duo encountered a Thalatth, a species capable of extraordinary metamorphosis. (DWAM: ''Hook, Line and Sinker)

The Eighth Doctor, Fitz and Anji met up with Iris Wildthyme in 1960s Vegas. Wildthyme also met Noel Coward here, and the Eighth Doctor, somewhat unusually, intentionally drank beer. (EDA: Mad Dogs and Englishmen)