The Vatican City is in Rome. It is the headquarters of the Roman Catholic Church. This is the world’s smallest independent nation-state, with 44 hectares in size. You just need to take about an hour to walk through the whole country.

You could climb to the top and have a nice aerial view.

You could walk into the city for free. However, you will have to pay to enter the Sistine Chapel and Vatican Museums. I went inside the both of them and recommend that you should also go inside. At the end of the route, you could see the paintings of Michelangelo on the ceiling of the Sistine Chapel. It was so beautiful that I just want to stay there as long as I could.