Castellan's office

The Castellan's office was a room in the fourth sector of Gallifrey's Capitol provided as quarters for the Castellan. It was close to the courtrooms and the Security Compound. (PROSE: A Brief History of Time Lords)

Parallel universe
In a parallel universe, a guard presented a report from the Castellan's office informing his fellow Time Lords that the Doctor had escaped. (AUDIO: Exile)