Kremlin
From Tardis Wiki, the free Doctor Who reference
The Kremlin was the headquarters for the government of the Soviet Union.
Turlough was told by the Fifth Doctor that he was not welcome in the Kremlin. (AUDIO: Singularity) This could have been because of his visit to the Kremlin centuries earlier. (AUDIO: Thin Ice)
The brothers Yevgeni and Yasha Lemayev worked at the Kremlin. (AUDIO: Thin Ice)
