Barcelona

Barcelona was a city in Spain.

20th century
The Eighth Doctor, Fitz Kreiner and Anji Kapoor visited Barcelona in 1937. It was largely inaccessible by sea due to blockades by various factions in the Spanish Civil War. (PROSE: History 101)

21st century
During the 5 March 2005 incident, Barcelona was among the thousand cities where Autons activated. (PROSE: Rose)

Barcelona was one of ten major cities across the world, all of which had underground railways, where Coldfire Construction built a reactor within a period of 18 months as part of a plot by the Slitheen to drain the Sun's energy, operated by at least one Slitheen disguised using a skin suit made from a local. At somepoint in 2008, after Sarah Jane Smith foiled the Slitheen with the help of her friends at Park Vale Comprehensive School at Ealing in London, she contacted UNIT so they would clear up the Coldfire sites. (TV: Revenge of the Slitheen)

The 2060 Olympics were held in Barcelona. (AUDIO: Nekromanteia)

Other references
When Donna asked what an augur was, the Tenth Doctor explained her ignorance to the augur, Lucius Petrus Dextrus, by telling him she was from Barcelona. (TV: The Fires of Pompeii)

Behind the scenes

 * The reference book, Doctor Who: The Encyclopedia, mistakenly refers to Barcelona as the capital city of Spain.