Author: Architectural bureau CHVOYA Reconstruction of the avant-garde plant. Saint-Petersburg, Pionerskaya street. 2019 This is a project for careful transformation of the avant-garde architectural monument - the power plant of the Krasnoye Znamya factory by Erich Mendelssohn into the concert hall. The traction substation building comprises four main volumes: the water treatment section at the building's fore which we dedicate to orchestra rooms; the machine hall turned into main auditorium; the turbine hall towards building's aft housing the chamber music hall; and an upright volume of the boiler room with staircase, which we designate to new vertical transport, new lifts and stairs for the two concert halls and other public spaces.