2 Best Sights in Passau, Franconia and the German Danube

Step inside the beautiful Neue Residenz, through the stately baroque entrance revealing a magnificent staircase—a scintillating study in marble, fresco, and stucco—and you'll find this excellent cathedral museum. It's home to one of Bavaria's largest collections of religious treasures—the legacy of Passau's rich episcopal history—along with a baroque book collection, colorful frescoes, and antique furnishings.

While excavating a 17th-century pilgrimage church, archaeologists uncovered a stout Roman fortress with five defence towers and walls more than 12 feet thick. The Roman citadel Boiotro was discovered on a hill known as the Mariahilfberg on the south bank of the river Inn, with its Roman well still plentiful and fresh. Pottery, lead figures, and other artifacts from the area are housed in this museum at the edge of the site.