Filippo Juvarra in Portugal: unpublished documents on projects of Lisbon and Mafra
In the Austrian State Archive in Vienna, there is a collection of letters written by Giuseppe Zignoni, Austrian royal envoy to the court of Lisbon from 1704 to 1724, the year of his death.The relationship between the two courts were intense during the first half of the eighteenth century, thanks to the marriage between the King of Portugal, John V