The Accademia Nazionale delle Scienze ("National Academy of the Sciences"), or more formally L’Accademia Nazionale delle Scienze detta dei XL, and also called the Accademia dei XL ("Academy of the Forty"), is Italy's national academy of science. Its offices are located within the Villino Rosso, at the corner of via L. Spallanzani and via Siracusa, Villa Torlonia, Rome.