A Map of Time from the Whovian worlds of Gallifrey
From space, Gallifrey is seen as a yellow-orange planet and was close enough to central space lanes for spacecraft to require clearance from Gallifreyan Space Traffic Control as they pass through its system. The planet was protected from physical attack by an impenetrable barrier called the quantum force field, and from teleportation incursions by the transduction barrier—which could be reinforced to repel most levels of this type of technological attack.
The Time Lord’s principal city, named The Capitol, comprises shining towers protected by a mighty glass dome. Outside the Capitol is a wilderness with plains of red grass, as mentioned by the Doctor in Gridlock and The End of Time.