This website where you can view the inside of the Sistine Chapel literally made my jaw drop. It is absolutely amazing (if you have a reasonably fast internet connection). You can pan and zoom to your hearts content looking at every detail in the paintings. I’ve been there in person, and this might actually be better. Its actually a little hard to describe, so go see for yourself. Well worth a little of your time.
Its so good I’m linking to it a second time with the full URL: http://www.vatican.va/various/cappelle/sistina_vr/index.html