The encyclopaedia has approximately 3.500 entries. This is a historical reference of the city, its suburbs, streets, avenues, embankments and squares. Articles concerning recently developed regions of St. Petersburg are provided with maps marking the most significant objects. A vast amount of material focuses on municipal administration and economy. Hundreds of articles are devoted to particular architectural monuments, fundamentally important economic enterprises, educational institutions, archives, libraries, theatres, scientific-research institutions, various political and social organizations, religious life, etc. More than 1.300 entries are biographical, about famous people, whose lives are bound to the city on the Neva River. The majority of the entries are accompanied by short bibliographies. The encyclopaedia includes more than 1.600 illustrations and maps