When you go to the Vatican you visit St. Peter's basilica, the Vatican museums and the Sistine Chapel. This is a working capital of the Roman Catholic church and not an amusement park. There are rules to enter into the basilica and for behavior.
Women are not to wear shorts and are to have their shoulders covered ( a scarf will do the trick). The guards do not allow visitors to stand and take pictures within the basilica. Bags are to be checked when entering the museums. In the summer the lines are long so it takes time to visit these things.
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