Did you know that Milan owns the biggest collection of sketches of Leonardo? 1119 autograph sheets and more than 2000 drawings about anatomy, astronomy, architecture, technical machines, optic, mathematics  and much more.

Inside the picture gallery you can admire incredible works of art such as the immense preparatory cartoon by Raphael for the realization of the great fresco, the school of Athens in the Vatican museums and the basket of fruit by Caravaggio.

Info: http://www.ambrosiana.eu/