13 historic monuments, puzzles which are still not solved

Large Zayatsky maze, Russia

The islands of the Solovetsky archipelago is decorated with intricate stone lace – mazes spiral shape. Locals styled them “Babylon”. Input and output a single, that is, if you go strictly on the tracks formed by boulders, after a while you can go there, where he entered. But how it was before? Some scholars write about practicality: fish traps. Other – about amusements: playground for round dances and games. But the majority is confident: ritual structures at the boundary with the other world.