This is the Colosseum and there are not words for seeing this. I've been looking at it in books and movies, and pictures and FINALLY I'm standing in front of it wondering how something really be that old and still be standing. Wow! Seeing this made the entire trip.
This is the Sistine Chapel, and yes, I did have to sneak the picture in. With the exception of seeing the David, this came in a very close second best for art.
Swiss Guard in Vatican City.