German architect / 1803-79 / born as the son of an industrialist in Hamburg / 1823-28 studied mathematics, history, architecture in Göttingen, Munich, Paris, interrupted by travels / 1830-33 travel in Ita­­­ly and Greece / 1834-49 professor in Dresden: construction in 1837-38 of the Maternity Hospitals, 1838-41 Hoftheater, 1839-40 Synagogue, 1847-55 Semper Gallery / 1849-55 fled to Paris and London due to his participation as a Republican in the Revolution / 1855-71 professor in Zurich: construction 1858-64 Polytechnical School (ETH), 1861-64 Observatory, 1865-69 City Hall in Winterthur / 1872-76 member of the Reformed Church in Vienna / Vienna: construction in 1872-81 of the Kaiserforums, 1873-88 Municipal Theater, 1874-77 Semperdepot / sympathized with Reformed views