Washington DC

Washington, D.C. was the federal capital city of the United States of America on Earth.

19th century
On 11th April 1865 Abraham Lincoln gave his final public address, in the wake of the end of the American Civil War. (TN: Blood and Hope) Later that year, the Sixth Doctor and Evelyn Smythe travelled to the city to fix history changes made by Robert Knox, including the assassination of Abraham Lincoln. (BFA: Assassin in the Limelight)

20th century
In 1951, after being sequestered by intelligence agencies the Eighth Doctor found himself in needing to report to people in Washington, not long after visiting Moscow in Russia. (EDA: Endgame) In 1969, the Eleventh Doctor helped President Richard Nixon to fight the Silence. (DW: The Impossible Astronaut / Day of the Moon) Before 1997 Brigadier-General Adrienne Kramer met the seventh incarnation of the Doctor in Washington when it was about to disappear into a time rift. (EDA: Vampire Science) In 1997, the Prime Minister of the United Kingdom was assassinated there on the 6th of May. (NA: The Dying Days)

21st century
In 2008, Alan Jackson moved here with his daughter Maria Jackson from their old home in the Ealing district of London. (SJA: The Last Sontaran) On Christmas Day 2009, President Barack Obama gave a speech from the White House when, like everyone else, he was converted into a copy of the Master. (DW: The End of Time) Following Miracle Day, Dr. Vera Juarez helped Rex Matheson recover from his punctured heart. (TW: The New World) She worked in a conference in City Hall to investigate the nature of the Miracle. (TW: Rendition) Rex, along with Esther Drummond later forcibly left the CIA in Langley to join Torchwood here, before heading for Los Angeles. (TW: Rendition, Dead of Night, Escape to LA) Discovering the passing of the categories of life by the US government, Dr. Juarez also left for LA to meet up with Torchwood. (TW: The Categories of Life)

41st century
The Tenth Doctor visited the city in 4041 and battled the Klytode there. (DWAM: Return of the Klytode)