This church was founded in the 5th century to house the supposed chains that bound St. Peter in Palestine (they’re preserved under glass below the main altar). But the drawing card is the tomb of Pope Julius II, which features one of the world’s most famous sculptures: Michelangelo’s “Moses” ★★★. Michelangelo was to carve 44 magnificent figures for the tomb. That didn’t happen, but the pope was given a great consolation prize—a figure now numbered among Michelangelo’s masterpieces. Don’t leave without a quick look at the unusual “skeleton tombs” in the left aisle.