Maybe it is needless to say this but I have been inside a lot of churches lately. That's where all the good medeival art is. I saw this flying death skull inside the church on Piazza del Popolo. The other comes from inside the Medicici library in Florence. It is famous for being designed by Michaelangelo and having a beautiful trick of the eye staircase. Also on the floor of the library, are these cow skulls. In marble. No flash photography please.