In retrospect, a guide would have been helpful for a lot of these sites. Rome had the most poorly-marked sights that I can remember. For example, the main marking @ the Vatican was a hand drawn paper sign that said SISTINE CHAPEL and an arrow pointing to the left. This is superior to the Palatine Hill which had no signage at all and no map provided upon entering. It was clear that we were walking on, and looking at, significant sites there; but we certainly didnt have any idea what they were.