Gallifrey

Gallifrey is a fictional planet from the long-running British science fiction series "Doctor Who." It is the homeworld of the Time Lords, an ancient and highly advanced race of beings with mastery over time and space. Located in the constellation of Kasterborous, Gallifrey is known for its iconic citadel and rich history, with its society deeply intertwined with temporal technology. The planet plays a central role in the Doctor’s background, often serving as both a source of identity and conflict, and is depicted as a place of immense knowledge and political complexity.