Frei Otto, who died Monday at age 89 in Germany, was a cult figure in the architecture profession
German architecture award hi-res stock photography and images - Alamy
Frei Otto – Architecture of the Games
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German architect Frei Otto named winner of Pritzker Prize a day
Frei Otto Wins 2015 Pritzker Prize, 2015-03-10
2015 Pritzker prize for architecture: Frei Otto
Frei Otto: a life in projects
Nine Projects by Pritzker Prize-Winning Architect Frei Otto
Frei Otto, Architect, Dies at 89; the Soap Bubble Was an