2 Piazza Pio XI
Leaf through a Leonardo CodexThe Ambrosiana Library is an oasis for book lovers. Founded in 1609, the library contains over 800,000 books and 35,000 manuscripts, including writings by Dante and Leonardo da Vinci's Codex Atlanticus. The pinacoteca art gallery is a treasure as well, with paintings from the 15th to 20th century. Botticelli, Titian, Caravaggio and Leonardo, among others, all hang out here.