Wikipedia confirms: "The Vatican Museums are the museums of the Vatican City and are located within the city's boundaries. They display works from the immense collection built up by the Popes throughout the centuries including some of the most renowned classical sculptures and most important masterpieces of Renaissance art in the world.
"Pope Julius II founded the museums in the early 16th century. The Sistine Chapel with its ceiling decorated by Michelangelo and the Stanze della Segnatura decorated by Raphael are on the visitor route through the Vatican Museums. In 2013, they were visited by 5.5 million people, which combined makes it the 5th most visited art museum in the world.[1]
"There are 54 galleries, or salas, in total, with the Sistine Chapel, notably, being the very last sala within the Museum."