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Credit: Courtesy Ai Weiwei

Ai Weiwei is known for the Herzog & de Meuron–designed Bird’s Nest stadium, for which he consulted. Yet his most important work might be his 2008 investigation into shoddy school construction after the Sichuan earthquake, which may have led to his 2011 detention. (Police cite tax evasion.) With Art/Architecture, the Kunsthaus Bregenz in Austria exhibits designs and a new installation in the simple, cerebral, architectural mode that made the artist famous. Through Oct. 16. • kunsthaus-bregenz.at