The history of the development of a museum in the Moscow Kremlin covers almost three hundred years and involves periods of flourish and prosperous research activity as well as periods of stagnation. The Kremlin and its cathedrals, churches, palaces witnessed several tragic events which had taken place during foreign invasions and civil coflicts. There was a time when the museum's staff had to assume the responsibility for the preservation and evacuation of the Kremlin precious collections — tsars' treasuries, historical artifacts and state relics — and they honourably performed their duties to their service and country.After a difficult period of political perturbations overmhelmed the country in the early XXth century, by 1920s there has been formed a unique museum complex in Moscow Kremlin territory, which included the Armoury Chamber, the Assumption, Archangel's and Annunciation Cathedrals, the Church of Laying of Our Lady's Holy Robe, the Ivan the Great Bell-Tower Complex and the XVIIth-century Patriarch's Palace.In the course of its centuries-old history the name of the museum and its administration have changed lots of times. Nevertheless the Kremlin remains one of the most beautiful and famous architectural ensembles of the world, included into the World Heritage list of UNESCO; its collection have always been of high historical and cultural value, carefully preserved and studied by the museun's team of researchers.