Day 6: Rome
Our final day of sightseeing was spent at the Vatican and St. Peter's Basilica, another stop where you will want to block off at least half your day to see. Entry to St. Peter's Basilica is free, but you'll need a ticket for the Vatican Museums and the Sistine Chapel. The lines were long enough that I would advise booking in advance. Also worth the price of admission is a climb to the top of St. Peter's Dome. It'll only cost you an additional €6-€8 (a bit more expensive if you choose to bypass the first set of stairs by taking the elevator) and you'll get gorgeous 360 degrees of St. Peter's Square and all of Rome.