The Blue Box by Bruzkus Greenberg — A Rooftop Apartment Reimagined as a Fluid Landscape of Light, Wood & Colour
Berlin rooftop transformed into an open, fluid apartment centered around a sculptural blue timber core, connecting light, airflow and daily living.
High above Prenzlauer Berg, Berlin, a compact rooftop apartment has been transformed into an elegant continuum of light, movement, and material tactility. Bruzkus Greenberg restructured the 75 m² residence not by adding more, but by taking away — dissolving interior partitions that once fragmented the home into disconnected rooms. What remained was airflow, sunlight, and the spatial potential to reimagine living as a seamless architectural experience.
The owners’ first attraction to the apartment was poetic rather than formal — the wind that could travel straight through the space when every door stood open. This became the conceptual foundation of the renovation: instead of compressing the interior into compartmentalised units, the architects liberated it, preserving the breeze, amplifying openness, and crafting a home built around circulation rather than enclosure.
Removing Walls to Find the Center
What once felt like a stair hall, bisected by an unused central fireplace — more symbolic than functional — offered no meaningful place to gather. By removing that obstacle and introducing a shelving screen to soften the stair boundary, the architects shifted the gravity of the apartment.
The result: the dining space becomes the new heart of the home, a social and spatial anchor from which every room flows.
At the centre of it all sits the project’s defining element — the Blue Box.
The Blue Box: A Spatial Core & Living Sculptural Object
A built-in volume of stained blue timber sits like an architectural jewel box, its colour saturated yet translucent enough to reveal wood grain. It functions not as a wall, but as a permeable core, integrating:
- Wall panelling
- Shelving and display
- A built-in dining banquette
Light, circulation and spatial relationships revolve around it like movement around a stone in water.
Opposite it stands a second built-in volume — a full-height wood-and-mirror storage unit that doubles perceived depth, blurs edges, and reflects light back into the interior. Between these volumes, the apartment becomes one fluid continuum where boundaries are suggested rather than drawn.
A soft blue curtain introduces flexible privacy: it can disappear to open the home entirely or glide into place to define a bedroom sanctuary without building walls.
Material Warmth, Colour Play & Furnishings that Shape Space
A custom butter-yellow sofa — affectionately named "Sophia 3000" — warms the living space with its sculptural form. The interior architecture, cabinetry, ceiling planes, and furniture engage in dialogue rather than coexistence, each reinforcing the spatial softness created by removing barriers.
The sloping blue ceiling acts as a quiet sky inside the room, connecting living, working, and sleeping areas under one continuous canopy. Circulation becomes natural, intuitive, atmospheric — a home felt as movement rather than as rooms.
Arrival & Ascent
Entry into the residence is intimate, enclosed within the Blue Box before opening dramatically into the main space — a compression-then-release sequence that heightens spatial awareness. Natural light drops from a skylight overhead, bright and high after the cocoon-like entry zone.
Sky-blue stairs draw the eye upward, leading to the roof terrace, where built-in seating creates an outdoor living room suspended above Berlin’s skyline. Here, wind once again completes the experience — the original poetic condition preserved.
All the Photographs are works of Pion Studio
