B Apartment is the private home of interior architect Zofia Wyganowska, set in a 970 sqft unit inside a late-1930s modernist building in central Warsaw, Poland, completed in 2025. Rather than restoring the building’s original interior to a period-accurate state, Wyganowska chose to let its materials age instead of working to keep them pristine, reworking Warsaw’s modernist proportions, geometry and materiality into a vocabulary of her own through her studio, Zofia Wyganowska Studio.

Stone, hand-painted wood and metal set the architectural frame, carrying the discipline of the building’s original geometry into the new layout. Linen, vintage lace and handcrafted textiles soften those surfaces, introducing texture where the stone and wood would otherwise read as severe. The hand-painted finish on the wood departs from the factory lacquer typical of the era’s built-in joinery, leaving brush marks that shift with the light through the day.

Bespoke pieces sit beside vintage furniture, contemporary design and work by Polish artists and craftspeople, a mix spanning several decades in the same rooms. In the living area, a hand-felted wool piece by Agnieszka Owsiany anchors the space, its irregular, textured surface set against the flatness of the stone and metal nearby. Objects Wyganowska gathered over years fill out the rest of the apartment, each piece carrying its own history instead of being selected to complete a scheme.

Wood is left to darken, textiles to soften, and metal to pick up a patina, changes most residential interiors are finished to prevent. Vintage lace, gathered over years before it ever entered this apartment, sits in the same rooms as pieces made specifically for this project. Stone floors original to the 1930s structure carry furniture Wyganowska commissioned this year, the oldest and newest surfaces in the apartment sharing a room with no finish applied to bring them closer together.