The international architectural community mourns the passing of Alexander Tzonis, who died on 1 March 2026 at the age of 88. A scholar of rare breadth and curiosity, Tzonis devoted his life to exploring the intellectual, cultural, and human dimensions of architecture. His work enriched generations of architects, historians, and students around the world.

Born in Athens on 8 November 1937, Tzonis grew up in a family deeply engaged with science, culture, and public life. He studied architecture at the National Technical University of Athens before continuing his education in the United States at Yale University as a Fulbright and Ford Fellow. Early in his career he combined architectural studies with artistic pursuits in theatre and cinema, revealing a lifelong interest in the dialogue between art, space, and society.

Throughout his distinguished academic career, Tzonis taught and conducted research at leading institutions including Harvard University and the Delft University of Technology. In 1985 he founded Design Knowledge Systems at Delft, a pioneering research institute dedicated to understanding how architects think, design, and innovate. His work brought together analytical rigor and humanistic reflection, demonstrating that creativity and systematic inquiry are not opposites but allies.

A prolific author and influential thinker, Tzonis made lasting contributions to architectural theory and history. Together with his long-time collaborator and wife, Liane Lefaivre, he introduced the concept of critical regionalism, a thoughtful approach that encourages architecture to respond to the cultural and environmental particularities of place while remaining open to global exchange. Their scholarship continues to inspire architects seeking meaningful connections between tradition, innovation, and community.

Beyond his intellectual achievements, colleagues and students remember Alexander Tzonis for his generosity, curiosity, and warmth. He believed deeply in dialogue, mentorship, and the shared pursuit of knowledge and was also one of the keynote speakers at the 15^th DOCOMOMO conference in Ljubljana Metamorphosis – The Continuity of Change in 2018.

His legacy endures in the ideas he shaped, the institutions he helped build, and the many lives he influenced. He will be remembered with gratitude, admiration, and affection.

Nataša Koselj