After the Treaty of Lausanne in 1923, the governors of the Dodecanese, Mario Lago (1924-1936) and Cesare de Vecchi (1936-1940), in order to assert their power and strengthen Italy's national prestige, began an intensive urban development activity. According to the new urban plan, the work of the architect Florestano di Fausto opened a coastal avenue in Mandraki, on both sides of which were located the most important public buildings. One of them is the General Administration Building or Government Palace (Palazzo del Governo), located immediately north of the Church of the Annunciation.→