major fortified central complex found in historic Slavic cities
Kremlin (Russian: кремль) is the Russian word for "fortress", "citadel" or "castle". It is used to refer to fortified central complexes in historic Russian cities. In Moscow it refers to the central square. The word is also used to mean the government of Russia.
The Necropolis for communists is in one of the walls of the Moscow Kremlin. The mausoleum for Vladimir Lenin is outside.