Oswald Mathias Ungers at 100: Cologne exhibition reveals the architect behind the 'Quadrat-Tyrann' moniker

Oswald Mathias Ungers (1926–2007) would have turned 100 on 12 July 2026. The architect, theorist and teacher, who shaped the post-war face of cities like Frankfurt, Berlin, Hamburg and Karlsruhe, is being honoured with an exhibition at the Museum für Angewandte Kunst Köln (MAKK). Titled 'O.M. Ungers – Architektur als Idee', it runs until 27 September and offers a rare look at the man behind the rigid grids.

A centenary exhibition in Cologne

The exhibition was curated by Ungers' daughter Sophia and his long-time press officer and personal assistant Anja Sieber-Albers. It opens with a striking image: an elderly Ungers standing before a photograph of himself as a young professor, both wearing a trenchcoat. Sieber-Albers, who worked with him for years, recalls his extraordinary memory.

When we had meetings and he said 'go get that photo', and I fetched it, he would say: 'No, no, there's another one, the cloud is on the left.' A photographic memory. I have never met anyone who had so much in their head.

The exhibition focuses on a handful of exemplary projects, beginning with Ungers' first own house in Cologne from 1958. Some 40 years later he built another residential structure, the 'Haus ohne Eigenschaften', which at first glance has neither front nor back and not even a clear entrance.

Strict geometry, strict boss

Ungers' architecture was famously severe, earning him the nickname 'Quadrat-Tyrann' (tyrant of the square) from critics. Sieber-Albers confirms that he was a rigorous employer. His design philosophy rejected decorative fashions in favour of clearly proportioned volumes that could endure for centuries. Personal self-expression through idiosyncratic forms was not his aim.

He was no joker, no fun-maker.

Iconic buildings across Germany

During the 1980s, Ungers left his mark on several German cities. Among his best-known works are the Messe-Torhaus on the Frankfurt trade fair grounds, the Badische Landesbibliothek in Karlsruhe, the Galerie der Gegenwart in Hamburg and the Dorotheenhöfe in Berlin. In each, his analytical, almost scientific approach produced buildings of striking clarity.

Beyond buildings: furniture, jewels, gardens

The MAKK show reveals that Ungers was more than an architect. He also designed furniture, jewellery and gardens, merging all these disciplines into a single artistic vision. This totality, his assistants suggest, made him a kind of father figure of West German postmodernism.

A lasting legacy

Ungers' influence was perhaps even greater as a teacher and theorist. His methodical, research-based way of working shaped generations of architects. In an era of rapid stylistic change, his insistence on timeless proportion continues to resonate, the exhibition suggests.