This is a complex multi-layer construction.
The inner layer is non-transparent, it covers the "pie" of the insulation. The outer one is perforated, giving lightness and delicacy to the massive building.
The Maryina Roshcha metro station will improve transport services for the Maryina Roshcha area and reduce the load on the Sokolnicheskaya, Kaluzhsko-Rizhskaya and Lyublinsko-Dmitrovskaya metro lines.