Niccolò Nasoni (San Giovanni Valdarno 1691-1773) was a painter and internationally renowned architect who worked in Siena, Rome, Malta and, mainly, in Oporto, Portugal, where he initially came to paint the Cathedral in 1725, and then during almost half a century of permanence, he repainted the face of the entire city: his “Tower of the Clerics” is the symbol of Oporto.