The Vatican Museums funnel you through four kilometres of popes’ collecting toward one ceiling, and the walk itself is the point: the Map Gallery’s painted Italy, Raphael’s rooms, then Michelangelo’s Last Judgment silencing a packed chapel. Nowhere holds more art per metre.
Book the skip-line entry and go at opening, or take the Friday-evening openings when they run. The chapel’s right-rear door exits toward St Peter’s and its separate queue; plan the basilica for early another morning.
Ottaviano metro is ten minutes from the museum entrance, which sits along the wall north of St Peter’s Square. Knees and shoulders covered, chapel photography is not allowed, and both are enforced.