Guide to Lefortovo, the main prison of Russia Katya Arenina, August 21, 2019 The Moscow Investigative District Lefortovo is the most closed prison of Russia. The disgraced Soviet nomenclature in the 30s and the officials of Putin’s call to the disgrace now, the dissidents of the 70s and the current fighters with the regime-the past and the present are closely intertwined in this building, even the year of construction of which the Chekists keep as a secret.