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.