The Lubyanka Building is the
popular name for the headquarters of the FSB and affiliated prison on Lubyanka
Square in Meshchansky District of Moscow, Russia. It was previously the national headquarters of the KGB; Soviet hammers and sickles can still be seen on the building's façade. The building's prison is actually located on the top floor, but since there are no windows on that floor, most prisoners, and therefore
popular conception, thought they were being detained in its basement.