On September 30, 1834, Semper obtained a post as Professor of Architecture at the Königlichen Akademie der bildenden Künste (today called the Hochschule) in Dresden thanks largely to the efforts and support of his former teacher Franz Christian Gau and swore an oath of allegiance to the King (formerly Elector) of Saxony, Anthony Clement. The flourishing growth of Dresden during this period provided the young architect with considerable creative opportunities. In 1838-40 a synagogue was built in Dresden to Semper's design, it was ever afterward called the Semper Synagogue and is noted for its Moorish Revival interior style. The Synagogue's exterior was built in romanesque style so as not to call attention to itself. The interior design included not only the Moorish inspired wall decorations but furnishings: specifically, a silver lamp of eternal light, which caught Richard Wagner and his wife Cosima's fancy. They gave a great deal of effort to have a copy of this lamp. Semper's student, Otto Simonson would construct the magnificent Moorish Revival Leipzig synagogue in 1855.