Completed in 2022, Varso Tower rises to 310 metres, making it the tallest building in the European Union. Developed by HB Reavis as the central element of the Varso Place complex in Warsaw, the tower represents a significant benchmark in European high-rise construction, not only in height but in façade engineering, material coordination, and envelope performance. In September 2025, the tower’s public observation deck officially opened, becoming the highest observation deck in the EU.

The building’s architectural design was led by Foster + Partners, with Buro Happold acting as façade consultant, supporting the performance, constructability, and integration of the building envelope at extreme height.

At the core of the façade execution stands Scheldebouw, part of the Permasteelisa Group, responsible for the delivery and installation of the unitised curtain wall system for Varso Tower. The façade is realised as a panelised, unitised system incorporating triple-glazed insulating glass units, a key requirement for thermal performance, acoustic control, and energy efficiency at scale. Publicly available project data attributes approximately 49,400 m² of unitised façade panels to the tower alone, underlining the logistical and engineering complexity of the envelope works.

Within the insulating glass units, SWISSPACER ULTIMATE warm-edge spacers were used, a confirmed component of the glazing build-up for the Varso project. The glass manufacturing scope for the project package is linked to Saint-Gobain Glassolutions, referenced in technical coordination and glazing documentation related to Varso Place.

Beyond transparent elements, Varso Tower integrates a substantial volume of opaque façade panels. These were supplied by Escofet, which manufactured 2,426 UHPC (Ultra-High-Performance Concrete) panels, covering approximately 12,400 m² of façade surface. The use of UHPC allowed for high durability, precision geometry, and visual consistency within the tower’s envelope composition.

Metal façade elements form another critical layer of the building skin. Outokumpu supplied stainless steel materials for Varso Tower, with Kasso Mühendislik responsible for fabrication and Scheldebouw coordinating façade integration. Documented stainless steel grades and finishes were selected to meet durability, aesthetic, and environmental performance criteria at high elevation.

Varso Tower stands today not only as a skyline landmark for Warsaw, but as a reference project for large-scale, high-performance façade delivery in Europe, demonstrating the coordination required between developers, designers, façade specialists, glass manufacturers, and material suppliers at the highest level of execution.