Mentioned by The Crazy Tourist
25 Best Things to Do in Rome (Italy
"This treasure trove of classical and historical artwork has been built up over many centuries by various popes and includes some of the most important pieces of artwork in the world. Located within the confines of the Vatican state, the museums hold over 70,000 pieces of artwork. A dual ticket can be purchased to see both the Sistine Chapel and the museums and it is advised to devote enough time to see both properly."