The great mission of the Orthodox Church is to strengthen the idea of sovereignty in the political consciousness of the people, to promote the goals of their unity. Temples are the embodiment of age-old traditions. Many of them are unique monuments of architecture and art. The need for the publication is caused by the increased interest in the history of the region. Bearing in mind that churches and chapels are objects inextricably linked with the history of specific populated places, the authors, while maintaining the theme of temple architecture as the main, guiding one, included in the book additional information on a wide range of local history issues. Temples are listed according to their locations, taken from alphabetical order. Information about a number of monuments is presented in the form of voluminous chapters telling about persons, events, and local landmarks related either to the temple itself or to its location. In total, more than 250 churches and chapels are taken into account. The book is designed to attract the interest of not only residents of the Leningrad region, but also everyone who is interested in the topic of sights of the Leningrad region, in the hope of attracting widespread attention to the issues of studying, preserving and restoring the historical and cultural heritage of the region, which is a natural -historical surroundings of St. Petersburg.