In the 1930s Lubyanka Prison was the feared destination of thousands of innocent victims of Stalin’s purges. Today the grey building looming on the northeastern side of the square is no longer a prison, but is the headquarters of the newly named Federal Security Service, or Federalnaya Sluzhba Beopasnosti. The FSB keeps a pretty good eye on domestic goings on. The building is not open to the public. The much humbler Memorial to the Victims of Totalitarianism stands in the little garden on the southeastern side of the square. This single stone slab comes from the territory of an infamous 1930s labour camp situated on the Solovetsky Islands in the White Sea.