A forbidding fortified abbey anchored atop a rocky hill, the Sacra di San Michele. To reach the church, you must climb 150 steps, past 12th-century sculptures, from the Porta dello Zodiaco, a splendid Romanesque doorway decorated with the signs of the zodiac. On the left side of the interior are 16th-century frescoes representing New Testaments themes; on the right are depictions of the founding of the church. Note that some sections of the abbey are open only on weekends and, when particularly crowded, visit may be limited to hour-long tours. Weather permitting, the views from the walls and terraces surrounding the church are breathtaking.