Russia, the sleeping beauty, has been a mystery to the whole world for centuries. Many major writers and scientists both in the country and abroad have tried to understand the features and patterns of its historical path. The whole history of Russia is full of unsolved mysteries — whether it is the era of Ancient Russia, the Moscow Kingdom, the Russian Empire or the Soviet Union. The reader is offered original versions, the results of research by scientists, local historians, and journalists. The authors of the presented materials prove the authenticity of the Veles book, trace the fate of Anna Yaroslavna, Queen of France, analyze information about the missing library of Ivan the Terrible and about the elder Fyodor Kuzmich, who may have lived the first half of his life as Emperor Alexander I, tell about expeditions that went in search of mysterious lands, unique inventions and riddles of the Soviet space program.