Frei Otto, the pioneer of sustainability and lightweight structures was notified of the honor before his death on March 9.
Frei Otto named 2015 Pritzker Prize laureate just one day after
10 Things you did not know about Frei Otto - RTF
Posthumous Pritzker Architecture Prize awarded to Frei Otto
Skeletons, Soap Bubbles and Spider Webs
Awards Archives - Metropolis
Pritzker Architecture Prize - Wikipedia
POSTHUMOUS AWARD FOR FREI OTTO - Andrew Wallace
Frei Otto The Pritzker Architecture Prize
Frei Otto Posthumously Awarded the Pritzker Prize