Space Station Zenobia contained a courtroom where the Sixth Doctor's trial was held. (TV: The Ultimate Foe)
The courtroom where the Second Doctor's trial was held was located in the Capitol on Gallifrey, at the headquarters of the Celestial Intervention Agency, (PROSE: Future Imperfect, Lungbarrow) though one account suggested the Three were based on the Station, (PROSE: Legacy) otherwise known as Zenobia. (PROSE: The Mysterious Planet, The Eight Doctors)