This article identifies their suggested top five biblical sites to visit. I'm not sure that all of these would make my top five. For example, how could one choose the Mount of Beatitudes over Capernaum? In any case, here is their list.
1. The Church of the Nativity, Bethlehem
2. The Church of the Holy Sepulchre, Jerusalem
3. Sea of Galilee, Israel
4. The Mount of Beatitudes, Israel
5. Mount Sinai, Egypt