Space Station Zenobia

Space Station Zenobia was a Time Lord space station owned by the Celestial Intervention Agency. It was massive and was equipped with the technology to create a time corridor and pull things through time and space to the station.

A courtroom was located onboard with the Matrix screen that allowed the court occupants to view and access the Matrix. The Seventh Door, a gateway to enter the Matrix, was located outside the court. The Doctor was taken from Thoros Beta on 3rd July, 2379 and placed on trial onboard the station.(DW: The Trial of a Time Lord, EDA: The Eight Doctors)

Behind the Scenes
Though the space station was first seen in the The Trial of a Time Lord it was not until the Eighth Doctor Adventures novel The Eight Doctors that its name was revealed.