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Agostino Barelli (1627, Bologna – c. 1687, Bologna) was an Italian architect of the Baroque.
Barelli is noted for introducing Italian Baroque architecture to Bavaria. was invited to Munich by Henriette Adelaide of Savoy to construct the Theatinerkirche in 1664. The work was cowded by conflicts with the construction supervisor Spinelli. Barelli created also the draft for Nymphenburg Palace in 1664. He was replaced by Enrico Zuccalli in 1674 and returned to Bologna.