Architecture firm Mudrogelenko renovated the 'NNS Apartment' in Saint Petersburg, Russia.
The architects changed the spatial arrangement of the home significantly by altering the type and build of the main stairway. They recognized the fact that the stairway acts as the "spine" of the building, and the rest of the spaces, or in this metaphor, "internal organs," depend on its stability and composition. The new staircase fulfilled its purpose by metamorphosing the relationship between the different spaces in the apartment. The staircase also works to distribute natural ventilation throughout the home from the bottom up.
Other features of the apartment include improved insulation, a vertically aligned space for utilities and reoriented spaces that allow for the filtration of natural light.