One of the most ridiculously beautiful places I've ever been. I half-wanted to cancel the rest of my trip 'round Ireland and use the time to stay here instead.
The pantheon feels most special when you get to experience with few people around... There's no lines, but there are people here all the time so it's another one of the places that you might consider checking out early in the day...
Consider walking around the south side of the walls around the Vatican, seeing the relationship of the piazza to that area... There's not much north of the Vatican except a touristy shopping district...
Takes at least half a day if not longer. But ABSOLUTELY worth it. Make sure you do a guided tour. Well worth the price. We did Maximus Tours (good price, great guide): Takes at least half a day if not longer. But ABSOLUTELY worth it. Make sure you do a guided tour. Well worth the price. We did Maximus Tours (good price, great guide): http://www.vaticantou...miprivate/7…see moresee less