On the history of the city subway and its prospects on May 23, Dmitry Grafov, an engineer and researcher, will tell. He will speak in the framework of the project «Lektoriy» of the publication "St. Petersburg Gazette". The meeting will begin at 19:00 at Marata, 25. The listeners will learn the history of the metro from pre-revolutionary projects to the present day. The speaker will present complex moments, for example, the construction of a distance between Lesnaya and Plaza of Courage, dispel myths and reveal the secret of where and when new metro stations will appear.