The proposed book is dedicated to the valuable though least known area of ​ ​ architectural heritage of St. Petersburg. In it, the author, continuing his many years of research, examines in detail the processes of architectural development of a number of enterprises that have played an important role in the development of the domestic industry. The task is to expand the usual boundaries of ideas about St. Petersburg architecture, which, along with classical ensembles, forms the unique appearance of the northern capital.