Paris

Paris was the capital of France. The Fourth Doctor considered it "the only place in the universe where one can relax entirely" (TV: City of Death) and along with Poosh, it was one of the two places he would consider retiring to. (PROSE: The Vampire of Paris)

16th century
While the First Doctor went off to meet Paris resident Charles Preslin, Steven Taylor ended up stranded in Paris in 1572 before the St Bartholomew's Day Massacre. (TV: The Massacre of St Bartholomew's Eve)

18th century
At some point, the Doctor learned to cook in 18th century Paris. (TV: The Lodger)

Separated from his TARDIS, the First Doctor and his companions got caught up in the French Revolution in 1794. (TV: The Reign of Terror)

19th century
The Doctor met Edward VII in Paris in an unknown part of the 19th century. (TV: Inferno) In the 1880s, the Third Doctor and Sarah Jane Smith arrived with the Apache chief War Eagle, having earlier mistakenly arrived in Paris, New Mexico in the United States. (COMIC: Perils of Paris)

20th century
During the Second World War, Paris was occupied by the Nazis. The Third Doctor aided a group of the French Resistance foil the Germans' plans to invade Britain. (COMIC: Who is the Stranger)

The First Doctor shared a drink with John Lucarotti in a Parisian inn. (PROSE: The Meeting)

The Louvre, one of the best art galleries in the universe, was located in Paris and in it was the only known copy of the Mona Lisa (though Scaroth of the Jagaroth had had more commissioned.) It was noted for the location of the Eiffel Tower, a well-known landmark of the country, created by Gustave Eiffel in 1889. (TV: City of Death)

By 1997, Paris had its own branch of UNIT called NUIT. (PROSE: The Dying Days)

A mime was acting in Paris at the turn of the millennium, transporting passers-by through time and space, to a series of underground catacombs, where a Minotaur was held, allowing those taken captive to go free if they could correctly answer his riddle. (COMIC: The Forgotten)

21st century

 * During the first seconds of 1 January 2000, Paris, along with the rest of the world, was nearly destroyed by the Eye of Harmony. (TV: Doctor Who)
 * In 2007, when Cybermen from Pete's World invaded the main universe, appearing all over Earth, an army of Cybermen appeared in Paris. (TV: Army of Ghosts)
 * In 2008, when the Rift Manipulator caused temporal incursions on a global scale, there were fears of a guillotine appearance in Paris. (TV: End of Days)
 * In 2010, the Eleventh Doctor brought Vincent van Gogh to the Musée d'Orsay in order to show him how appreciated his work would become. (TV: Vincent and the Doctor)
 * After a wave of mysterious cubes arrived on Earth, hundreds of them could be seen in Paris by the Eiffel Tower. (TV: The Power of Three)
 * In 2086, the Ice Warriors of Mars propelled an asteroid towards Earth and it crashed into Paris, completely destroying the city. This event marked the beginning of the Thousand Day War between humans and Ice Warriors. (PROSE: Transit)
 * When humans arrived on Venus, Paris had a namesake in the shape of the colony world New Paris. (The Dalek Book)
 * Due to its cold climate and northern latitude, the Ice Warriors sent their Seed Pods here to create an atmosphere lethal to humans, but which the Ice Warriors could thrive in. This was foiled when the Second Doctor used the Weather Control Unit to destroy the pods with rain. (TV: The Seeds of Death)

Behind the scenes
City of Death was filmed in Paris in 1979, marking the first time that shooting for Doctor Who had occurred outside the United Kingdom, though at that time France was one of the few European countries that had yet to import the series.