Sydney

Sydney was a city located in Australia.

History
According to one account, in the 1970s, a group of Daleks based underneath Antarctica captured a nuclear submarine and used it to destroy Sydney. Their plan to use the ruined city as a base from which to convert humans into slaves and conquer Earth was defeated by the Third Doctor with the aid of Lt. Davis. (TVA: *Sub Zero) However, news reports showed Sydney whole again by the time that the Tenth Doctor and the Children of Time returned Earth from the Medusa Cascade in 2009. (DW: Journey's End)

BOSS proposed that, after he conquered the world, they would get the Sydney Orchestra to play at his victory ceremony. (DW: The Green Death)

On 14 July 1993, the Seventh Doctor met with thirty-seven year old Dorothée in a café in Glebe, a suburb of Sydney. (NA: Set Piece)

In 1995, the Doctor, Ace and Bernice Summerfield visited the interdimensional café in Glebe. (NA: Set Piece)

In 1996, the Doctor, Chris Cwej and Roz Forrester visited Sydney for a week. (NA: Return of the Living Dad)

The Third Doctor bought a beach house in Sydney while his house in Kent was being painted. (NA: Sleepy) In 2010, the Tenth Doctor and Majenta Pryce investigated an incident where a Chronal Wave caused the passengers of an aircraft to age several hundred years. (DWM: The Age of Ice)

The Eleventh Doctor, Kazran Sardick and Abigail Pettigrew visited Sydney on Christmas eve. (DW: A Christmas Carol)

In 2096, Sydney was an independent city-state. (PDA: The Indestructible Man)