From here, the Essential Free Tour will take guests to another church of significant Christian value, the Chapel of the Milk Grotto. Shrouded in myth and legend since Byzantine times, this church is said to be the place where the Holy Family found refuge during the Massacre of the Innocents. Other sites of religious significance include the lovely Chapel of St. Catherine, which forms part of Bethlehem’s collection of UNESCO world heritage sites. Although Bethlehem holds huge importance for the Christian world, there is also a large Muslim population. During this tour, guests will visit the Mosque of Omar, the only mosque in Bethlehem’s old city. Bethlehem is also revered by the Jewish faith for being the birthplace of David, King of Israel. As guests wander through the city, they'll discover all kinds of ruins and relics.