Gallifrey


 * “There was a war. A Time War. The last Great Time War. My people fought a race called the Daleks, for the sake of all creation. And they lost. They lost. Everyone lost. They're all gone now. My family, my friends, even that sky. Oh, you should have seen it, that old planet. The second sun would rise in the south, and the mountains would shine. The leaves on the trees were silver, and when they caught the light every morning, it looked like a forest on fire. When the autumn came, the breeze would blow through the branches like a song.“
 * — The Tenth Doctor talking about Gallifrey to his companion Martha Jones.
 * — The Tenth Doctor talking about Gallifrey to his companion Martha Jones.

Gallifrey was the homeworld of the Time Lords. By one account, the planet was actually called Jewel, and during several time wars, it was utilitarianly referred to as the Homeworld. The literal translation of the name "Gallifrey" was "They that walk in the shadows".

Gallifrey and all its cloneworlds were destroyed in the War in Heaven. It was believed to have been destroyed in the Last Great Time War, but was actually frozen in a pocket universe by the first thirteen incarnations of the Doctor and later discovered at the end of the universe. By this point in their history, the Time Lords were wary of being discovered alive, although they still continued their mission to ensure nothing threatened the Laws of Time.

The Master later claimed to have been responsible for leaving Gallifrey in ruins after finding out the truth about the Timeless Child.