Liverpool

Liverpool was a city in England and home city of The Beatles.

In 1893, the Doctor in his eighth incarnation visited Liverpool (EDA: Camera Obscura). Whilst in his first incarnation, the Doctor briefly visited Liverpool on 25th December 1965 (DW: The Daleks' Master Plan). The seventh incarnation of the Doctor visited Liverpool in the early 21st century (PDA: The Hollow Men).

Liverpool was also the location where Bowie Base One's bulkheads were created in the 2050s (DW: The Waters of Mars).

Behind the Scenes
Tom Baker, Maureen O'Brien, and Elisabeth Sladen were all born in Liverpool.