This publication for the first time introduces readers to the full text of the manuscript book "Description of St. Petersburg," which is stored in the St. Petersburg branch of the Archive of the Russian Academy of Sciences and is a unique monument of Russian historical and geographical science of the mid-18th century. "Description of St. Petersburg" was compiled by the "Imperial Academy of Sciences at the Library Assistant" A. I. Bogdanov Thus, A. I. Bogdanov created a kind of complex work, including the first domestic description of the new Russian capital and the first commented work of Russian fiction dedicated to this city.