When visiting Rome, you cannot miss visiting the Vatican City/State. Whether a Catholic believer or not, The Vatican is definitly one of the Richest spots in the world in terms of Architecture, decoration and art works. Of course, if you are a Chistian, you add to this wealth the spiritual importance of this holy place.

You need to count a full day to visit well the Vatican. I strongly recommend to take teh guided tours proposed on the Vatican website (see links in the recommednations) and in any case, you definitly need to buy the tickets online in order to avoid the huge queue before the Museum entrance.

I would also recommend avoiding visits on Sundays since the Museum\'s visit is free, meaning longer queues, and the closure of the Gardens.

Ideally, you should arrive a bit before the opening hours of Saint Peter\'s Basilica, and start the visit from there, than head up to the museum and finish in the gardens.

Dress Code is very important, and you should avois wearing shorts, mini-skirts,... since you will be entering inside holy places.

As in every highly touristic place with crowds, be carreful for Pick Pockets.