Once upon a time, a person called St. Petersburg “a city of horror, a palace of fear.” His name is probably now lost forever in the annals of history. However, this definition has become the hallmark of the cultural capital. Why does St. Petersburg, which was the capital of the Russian Empire from 1712 to 1918, scare many? The culprit is probably the witchcraft of white nights, frequent fogs and rains, in which city buildings are lost, oppressing the grandeur and beauty of architectural structures. However, this is not the only thing that causes fear. The city, which has been absorbing secrets, crimes and tragedies for centuries, has gone beyond the general pattern of its existence. He became part of another time space, where life, matter and energy are radically different from what we are used to. This book presents the most famous anomalous phenomena of St. Petersburg, the authors’ thoughts about their nature, based on personal observations, research by scientists and eyewitness accounts. We hope that the essay-guide will certainly interest readers who are not indifferent to controversial and unresolved problems of the unknown, which still remain outside the field of view of “official” science.