If you go via the metro you'll want to visit the Vatican Museums first. If you take the A line - Cipro is the closest stop though not all trains stop there ... the Ottaviano stop at which all trains pause is only a couple of blocks farther from the Museums.
The walk between the Museums and the square is only a kilometer, about 15 minutes.
Coming to Vatican. When you go form Castel Angelo, which is also a worth seeing archaeological museum, to Vaticano you’ll have to cross one street with a strange traffic light. It’s one of those you should push and wait for green colour. No matter if you pushed or not, if you’re lucky to see green – RUNNN! :) Green is green, but nobody warns it’s short!
First you’ll see a street, full of palms leading to St. Peter’s square and cathedral. It looks great in a day time and even more wonderful in the evening.
Because you have to been in Rome to go over there, you only need to take the subway or a bus, and then walk to go to Vatican City, but is a nice walking because when you are nearer you feel more excited.
If you take the subway, then you MUST visit the Vatican Museum first. Hop onto the Cipro line which is the CLOSEST stop though not all trains stop there ...
If you refer to board a bus to St. Peter's Square instead, you may just want to visit the church first if you've not arrived early in the morning. The walk between the Museum and the Square is just 1KM, approximately 15 minutes.
If you ask me, better take a bus to Piazza di Risorgimento if you can; the Piazza is just a few hundred meters from the Museum entrance anyway. Or better still, hail a cab. The cost should be under ITL15,000 from almost any central city location (in Rome). Happy galavanting, my friends!
Photo Below: My cute as a button little sister posing next to a fountain along St Peter's Square.
The Vatican has an incredibly complex yet efficient subway system. Er, no. It's the world's smallest country. The parts that you can visit are about as large as your average suburban shopping mall. Methinks that you'll be walking.
This is inside St. Peter's Cathedral. I thought this was a really cool picture, how the sunlight is hitting the statue and all...decide for yourself.
I didn't take a horse-drawn carriage ride, but I would imagine a ride around the Piazza in the evening would be beautiful.
Vatican City is in Rome, so you can use any Roman mode of transportation to get there. Note that I do mean "get there" - once you are in Vatican City, you'll walk.
To see how to arrive by...