Solovetsky Monastery, Arkhangelsk region.

The monastery has been standing here, among the northern landscapes of the White Sea, since the XV century, and the history of the construction of the Solovetsky Kremlin is a mystery to this day. The weight of some boulders, of which the walls are lined, exceeds 8 tons, and the age of lichen growing on them is 2000-3000 years! Even historians do not know when, by whom and how the construction was started. There are also one and a half kilometers of tunnels under the monastery: the monks used them both as a sewer and as a back door. Solovetsky Monastery is a real fortress, impregnable and fortified. During the Crimean War, the English fleet tried to shell the monastery with cannons. The result of nine hours of incessant fire was only a wounded seagull and a damaged icon.