The book introduces readers to the heritage of St. Petersburg, sharing the geological history of a unique city, a world heritage site, and part of the UNESCO list. It also explains the role of small towns and fortresses near St. Petersburg, whose stone decoration played an essential role in the city's evolution and was key in the history of neighboring cultures. The book also describes the main architectural symbols of St. Petersburg, such as the Alexander Column, the Bronze Horseman, the Peter and Paul Fortress and more. In addition to five guided tours of the city center, it offers descriptions of historic quarries, some of which are now open-air museums.