Did you know that the underground road in St. Petersburg was supposed to be built back in the 1820s and the great poet Alexander Sergeevich Pushkin could well have become a metro passenger? In 1814, the English inventor Marc Isambard Brunel presented to Emperor Alexander I a project for the world's first tunneling shield for laying tunnels under the Neva. But with the help of this shield they built an underwater tunnel under the Thames for the London Underground, but in the city on the Neva the first underground line appeared only in November 1955, although they were going to open it in 1925 and 1942. The chapter on the history of the design and construction of the metro provides only recently declassified archival documents. Readers will visit all the stations of the St. Petersburg metro, learn a lot of interesting things from the biographies of architects, artists and sculptors who took part in their creation, and those who wish are invited, using the clues, to find the surprises themselves “hidden” by the masters in their creations. Perhaps some facts will be unexpected, there are some legends and amazing stories: you will find out what the writer Sergei Dovlatov did during the construction of the metro and where famous films were filmed, and you will also be able to look into the future and find out where new metro stations will appear in the future and how they will look.