Architectural Concept
The winning design by the firm Mario Cucinella Architects (MCA) – realized in cooperation with Zechner & Zechner – is based on the idea of a permeable, light-filled vertical structure in close dialogue with the landscape of the adjacent Prater park. Offset floor slabs and structuring projections and recesses create a rhythmic façade composition that is not only aesthetically precise but also offers functional advantages – such as natural shading and wind reduction.
Central design elements, such as the double-height glazed panoramic corners, open the interior space in all directions and intensify the inflow of daylight, creating a distinctive spatial quality – both visually and atmospherically.
Material Selection: Glass as a Defining Element of Identity
A particular challenge arose from the installation conditions on site: due to the decision to forego scaffolding, the glass railings served from the outset as fall protection for other trades. This constraint required installation to be carried out entirely from the balcony side – without access to the exterior of the balustrade. Adding to the difficulty was a very low parapet, which offered only a small surface area for fastening. To meet these specific requirements, Glas Marte fundamentally modified the fastening profiles. The position of the adjustment blocks was adapted so that the glass elements could be aligned from the inside. At the same time, the design of the adjustment blocks was made more compact – a well-considered special solution tailored to the individual project.
The system is a prime example of how modular solutions can be refined through precise detailing into custom high-end components – without design compromises. In previous projects as well, Glas Marte has implemented similar bespoke solutions, underscoring the importance of close cooperation between planning, execution, and product manufacturer.
Glass railing with sliding systems combined in one profile were used for GRÜNBLICK im Viertel Zwei. The substructure and adjustment blocks of our GM Railing® glass balustrades had to be completely redesigned for this project, and the normal suspension profile was also adapted.
Adaptable Spaces, Transparent Boundaries
The weather-protected transition between indoor and outdoor spaces is another area where “Grünblick” sets new standards. The GM TOPROLL® 15/24 glass sliding system – likewise implemented in a project-specific, adapted version – forms another highlight of the façade technology. Installed behind the glass railings on the interior side of balconies and loggias, it can be fully or partially opened or closed depending on the situation.
The frameless construction and ceiling-mounted track create a minimal, almost floating appearance while ensuring an unobstructed view of the surroundings. A specially developed combination profile serving as the floor track allows the system to connect seamlessly to the glass railing while also accommodating the floor covering – an example of functional integration at a high design level.
The high-quality carriage technology and innovative glass mounting – consisting of structural bonding combined with mechanical bolt fastening – ensure perfectly vertical positioning of the glass elements and prevent any later displacement. In total, around 500 meters of sliding system were installed – a clear indication of the central role that movable, transparent room enclosures play in the overall concept.
Includes English subtitles.
Lighting Design and Color Scheme
The building’s façade comes alive through the interplay of brightness, reflection, and refraction. The light, ceramic surface interacts with sunlight, causing the building to appear in ever-changing nuances depending on the time of day. Combined with the vegetative design – from greened base zones to planted rooftop terraces – this creates a nuanced, vibrant appearance that maintains a finely balanced harmony between architecture and nature.
The use of Mediterranean color tones brings warmth to the vertical structure and contrasts with the often rational aesthetics of large urban buildings. This choice of colors supports the goal of creating a place that not only functions but also resonates emotionally.
Architecture as a contribution to a livable city
“Grünblick in Viertel Zwei” is more than a high-rise – it is an architectural statement for intelligent densification, aesthetic clarity, and sustainable building culture. The consistent integration of high-quality glass technology, a precisely coordinated material and color palette, and a sensitive approach to light and space make the project a relevant point of reference for architects who see design not as an end in itself, but as a contribution to a better city.
In this case, glass is not merely here to envelop the building, but rather functions as a medium of communication – between inside and outside, between people and the city, between light and space.
