After visiting the Sistine Chapel, I spent the rest of the afternoon drawing in the Museo Chiaramonti, the Greek and Roman antiquities wing of the Vatican Museum. It was a long vaulted corridor with hundreds of portrait busts and statues of emperors, gods, goddesses, philosophers and plebeians.
I am fascinated by their eternally blank stares.
(sidenote) Everything in the Vatican Museum is obsessively numbers and cataloged. All the portraits were labeled with both a cardinal number and a Roman numeral.