This four-day walking tour will take you on amazing     1     through the Andes Mountains on the way to the city of Machu Picchu. After     2     your destination, you will have a day to explore and be amazed     3     this ancient city.     4     amazing is the Incas’ dry stone method of building. Inca builders cut stones to exact sizes so that nothing was needed to hold walls together other     5     the perfect fit of the stones.