Pilgrims in traditional Bavarian folk dress walk to attend the annual Ascension Mass (in German called Christi Himmelfahrt) at the open-air altar at Birkenstein on May 14, 2015 near Fischbachau, Germany. Several thousand pilgrims from 40 different folk group associations participated in the annual event to mark Jesus Christ&#39;s ascension to Heaven in a tradition going back centuries. Bavaria is predominantly Catholic.