The Biblioteca nazionale Vittorio Emanuele III (Victor Emmanuel III National Library) is a national library of Italy. It occupies the eastern wing of the 18th century Palazzo Reale in Naples, at 1 Piazza del Plebiscito, and has entrances from piazza Trieste e Trento. It is funded and organised by the Direzione Generale per i Beni Librari and the Ministero per i Beni e le Attività Culturali.
In quantitative terms it is the third largest library in Italy, after the national libraries in Rome and Florence, with 1,480,747 printed volumes, 319,187 pamphlets, 18,415 manuscripts, more than 8,000 periodicals, 4,500 incunabula and the 1,800 Herculaneum papyri.
More information on the Wikipedia page [1]
The website, in Italian, is [2]