Wright's Grady Gammage Memorial Auditorium for Arizona State University (1959–64) was the last public building that he designed. It was modeled on his project of 1957–58 for an opera house in Baghdad, Iraq, and was related to his project of 1957 for a new Arizona state capitol. All these designs exemplified Wright's belief in a regionally varied modern architecture incorporating history and landscape and opposing the International Style. Baghdad's opera house reflected postwar Iraqi ideology and Wright's views of Islamic and earlier architectures. The design's adaptation to postwar Arizona's desert entailed reworking the theater's acoustics, exterior form, and material symbolism.