At the foot of Piazza Umberto lies a scallop shell white church dating back to the 10th century, unassuming curb appeal compared to the other gaudy, baroque-era cathedrals in Italy. A sign outside warns of a local legend that it’s bad luck for newlyweds to walk hand-in-hand down its steps post-nuptials, lest you bring ill-will upon your marriage and curse yourself for a rocky road ahead of early divorce and untimely death.