The Galleria Nazionale ( on Piazzale Marconi ) exhibits more excellent works of Correggio and Parmigianino , and an added prize of the collection , the sketch of a young girl , Testa di Fanciulla , by Leonardo da Vinci .
Artwork by Correggio and Parmigianino and da Vinci are among the treasures to be found at the Galleria Nazionale .