Frei Otto

Lore & Background

Otto was born in Siegmar, Germany, and grew up in Berlin. He studied architecture in Berlin before being drafted into the Luftwaffe as a fighter pilot during World War II. Interned in a prisoner of war camp near Chartres, he began experimenting with tents for shelter due to lack of material and urgent housing needs. After the war, he studied briefly in the US and visited architects including Erich Mendelsohn, Mies van der Rohe, Richard Neutra, and Frank Lloyd Wright.

He began a private practice in Germany in 1952 and earned a doctorate in tensioned constructions in 1954. His saddle-shaped cable-net music pavilion at the Bundesgartenschau in Kassel in 1955 brought his first significant attention. He founded the Institute for Lightweight Structures at the University of Stuttgart in 1964 and headed it until retirement. Major works include the West German Pavilion for Expo 67 in Montreal and the roof of the 1972 Munich Olympic Arena.

Later projects included work with Shigeru Ban on the Japanese Pavilion at Expo 2000, with a roof made of paper, and a convertible roof for the Venezuelan Pavilion. He also envisioned a memorial for the September 11 attacks involving water-filled footprints of the World Trade Center. He died on 9 March 2015; the Pritzker Prize was announced the next day.

Reader's Guide

Frei Otto's significance lies in his pioneering advances in lightweight tensile and membrane structures, which transformed architectural possibilities for large-span roofs and shelters. His work combined structural mathematics and civil engineering to create efficient, minimal forms. The roof of the Olympic Stadium in Munich became an iconic symbol of modern engineering. Otto's influence extended through his teaching at the University of Stuttgart and the Architectural Association, and through his institute's research. His later projects, such as the paper roof for the Japanese Pavilion, demonstrated continued innovation. The Pritzker Prize awarded in 2015 recognized his lifetime contributions, though Otto himself stated he had not sought the prize. His legacy endures in the field of lightweight construction and in the many architects and engineers he mentored.

Did You Know?

• Otto was a fighter pilot in the Luftwaffe during World War II and was interned in a prisoner of war camp.
• He earned a doctorate in tensioned constructions in 1954.
• He designed the roof of the Olympic Stadium in Munich for the 1972 Summer Olympics.
• He was awarded the Pritzker Architecture Prize in 2015, the day after his death.