I would second all the recomendations made: First a guide; The Vatican is a must see for the scale, the architecture, the art; The gypsies are very serious--my wallet was snatched by 2 little girls within an hour, valuables were in a money belt though our 7 year old was shocked to see an adult robbed by children his age right in front of him. Somewhat obscured by the building since the 13th century is the grandeur of old Rome. I didn't fully appreciate it until I saw city after city in the hinterlands of Turkey--each with 5,000-10,000 seat auditoriums and stadiums, some still in use after 1,800 years. Only then did I really start to understand what Rome really was.
