Tower of London

The Tower of London was a prison, fortified royal residence, and UNIT headquarters in London. The Doctor visited it on more than one occasion and by his eleventh incarnation had been imprisoned there five or six times. (PROSE: Magic of the Angels)

The Doctor was imprisoned in the Tower on the (i.e., the rack). (AUDIO: Trail of the White Worm)

Henry VIII once sent the First Doctor to the Tower of London, which was where the Doctor wanted to be, as his TARDIS had also been taken there. (TV: "Strangers in Space")

Jane Grey was befriended 19–20 July 1553 by her new lady-in-waiting Rani Chandra, a teenage girl from 2010, whilst residing in the Tower during her brief reign as Queen. (TV: Lost in Time) The First Doctor assisted Lady Jane and was present at her execution at the Tower. (PROSE: The Nine-Day Queen)

The Sixth Doctor and Evelyn Smythe were imprisoned there by the order of Queen Mary I in 1555, who was under the erroneous impression that they were plotting to assassinate her and place her Protestant half-sister Elizabeth on the throne. (AUDIO: The Marian Conspiracy)

On a different occasion, the Doctor shared a cell with Sir Walter Raleigh. (TV: The Mind of Evil)

The Eleventh Doctor was once imprisoned in the Tower without trial on the personal order of King Charles II. Two days later, a sphere twenty feet across was seen heading away from the tower carrying the Doctor. (TV: The Impossible Astronaut)

The Fifth Doctor would return to a cell there, this time with Nyssa, after falling foul of Sir Isaac Newton in the late 17th century. (AUDIO: Summer)

While exiled to Earth, the Third Doctor once helped the Brigadier track down an alien master of disguise who had a secret base at the Tower Hill Underground station. From this base, directly under the Tower, the thief hoped to gain access to the Crown Jewels. Although a combination of the Doctor, UNIT soldiers and Beefeaters were unable to capture the thief, they did prevent him from stealing the jewels. (COMIC: Secret of the Tower)

Ian Chesterton opined to the First Doctor that Frankenstein's House of Horrors at the 1996 Festival of Ghana (which they mistakenly believed to have been within a human mind) had more spooks than the Tower of London. (TV: The Chase)

In the early morning of 1 January 2005, the newly regenerated Eleventh Doctor flew west over the Tower, whilst clinging by his fingers from his TARDIS' doorway, before climbing back aboard and being thrown nearly nine years back in time. (TV: The Eleventh Hour)

By 2006, UNIT headquarters was located beneath the Tower of London. From there, Prime Minister Harriet Jones directed the responses of UNIT and Torchwood to the Sycorax invasion of Earth. (TV: The Christmas Invasion) The headquarters was still used in 2009, although UNIT also maintained mobile bases in lorry trucks. (TV: The Sontaran Stratagem)

In an alternative timeline, both the Sixth Doctor and the last surviving Daleks were imprisoned in the Tower from 1903 to 2003. (AUDIO: Jubilee)

In another alternative timeline, the Eleventh Doctor was imprisoned in the Tower by Holy Roman Emperor Winston Churchill on the perpetual 22 April 2011. (TV: The Wedding of River Song)

Later in the first half of the 21st century, Kate Stewart summoned the Eleventh Doctor to the Tower to assist in UNIT's study of the newly-activated Cubes. (TV: The Power of Three)

When the Department controlled Britain around the year 2050, the Tower of London became Dauntless Prison, a prison for all the aliens that arrived on Earth. When K9 Mark 2 and his friends released the alien prisoners there in 2050, the Department's treatment of the prisoners was leaked to the media and the prison was shut down. (TV: Liberation)

Some time around the 29th century onwards, during the reign of Elizabeth X, the tower or a new facility named after the original tower, was incorporated into Starship UK. Its dungeon contained the devices used to torture the star whale beneath the craft into moving. Amy Pond visited the Tower during this period with the Eleventh Doctor. (TV: The Beast Below)