Within Rome, the old and the new sit together in harmony. It’s the ancient that proves the biggest draw for tourists though, and with sights such as the Colosseum, the Roman Forum, and the Pantheon, it’s not hard to see why.
There were two main reasons for wanting to visit the Vatican; the Map Room (I’m a total Map fanboy, so what?) and the Sistine Chapel (because it’s the Sistine Chapel!!). But unless you’re uber religious and visiting the Vatican is the holy grail of pilgrimages for you, then it might be one to avoid.