After some wonderful pizza at Bonci/Pizzarium, I went to the other attraction in the area, the Vatican Museum. I had made a reservation online before I arrived, and printed out my voucher, so there was literally no wait to get my ticket. It was well worth the 4 Euro (about $4.50) reservation fee to avoid the line that had no reservations. There are some tours that let you skip the line, so unless you literally want to stand for hours waiting to get inside, either make an online reservation or book one of the tours that give you immediate entrance. Vatican City is surrounded by a huge wall and most transit arriving or departing from this City work, including the LED displays on buses, and drivers who will give you instructions on where to get off for your desired destination:)
(Note that the Roma Pass only includes museums in Rome and this is Vatican City in the Vatican State, not Rome).
You can take the Metro to Cipro for a pizza at Pizzarium, and then walk about 10 minutes, or if you are tired, take a bus from the metro station that gets you closer to the entrance line. Yes, that line is just a small part of the line for entry to the Vatican Museum another two blocks away.
Once you go through security, get your ticket and scan it through the turnstiles, you see this!
A close up at the end of the hallway.
All the ceilings were different.
Even the ceiling above the gift shop was a work of art,
of course, replicas were available as a scarf to take home for about 100 Euros or $110 US.
The museum is massive and you could easily spend all day, so if you are planning on seeing St. Peter's Basilica and Square on the same day, I highly recommend that you take a break and sit down for bit. I saw tired teenagers plopped down on these rare visitor chairs scattered throughout the section of the museum near the gift shop.
You can head to the cafeteria on the ground floor, get a pizza,
By the end I was too tired to walk down the winding steps, as beautiful as they are, so I took the most exquisite wooden elevator to the exit, along with three people in wheelchairs, their family and caretakers, five other tired people, and two Vatican guards. I'm sorry that I didn't get a picture of the elevator, but I am not sorry that I did not take photographs inside the Sistine Chapel, respecting Vatican protocol. Remember that as a tourist you are representing your country, so please be diplomatic and follow the customs of the host.