Russia's most mysterious building. He's guarding all of Moscow

Zdjęcie: Najbardziej tajemniczy budynek Rosji. Stoi na straży całej Moskwy

It's 1 of the strangest military buildings in the world. The Don-2N facility built in the form of a quadrilateral pyramid is most likely the most urgent military base in Russia, as it is the heart of the local strategy of defence against atomic attack.

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