Roman Dziedziejko, Michał Leszczyński, Krzysztof Mycielski, Rafał Zelent, Rafał Grzelewski. GRUPA 5

Since its foundation, the practice has worked on projects of different scales and programmes, ranging from residential buildings and offices to educational, cultural and healthcare facilities, transport infrastructure and public spaces. Its work pays particular attention to the relationship between buildings and their surroundings, as well as the possibilities of adapting and reusing existing structures. Collaboration between architects, engineers and other specialists is central to its approach, from the initial stages of a project through to construction.

Among its best-known works is the renovation of Wrocław Główny railway station (2012), an intervention in one of Poland's most significant historic transport buildings. Another notable project is the Faculty of Radio and Television at the University of Silesia in Katowice (2017), developed in collaboration with BAAS Arquitectura and Małeccy Biuro Projektowe, which was nominated for the European Union Prize for Contemporary Architecture – Mies van der Rohe Award in 2019.

Other important projects include the restoration of the former Gurewicz Sanatorium in Otwock, converted into the Mirai Clinic medical centre (2020), which was nominated for the same European award in 2022, and the transformation of former industrial complexes such as Monopolis in Łódź and Bohema in Warsaw's Praga district.

Throughout its career, GRUPA 5 has combined new construction with the adaptation of architectural and industrial heritage, exploring the relationships between architecture, urban memory and everyday life.