The best excursion to go to Machupicchu is through the Inca Trail. The Inca Trail excursion will take you through mountains and beautiful landscapes of great vegetation, flora and fauna all through a hike on real roads that were used by the Incas and that lead to the wonder of Machupicchu.
The most recommended excursion is the 4-day Inca Trail that allows you to enter through the Sun Gate (Intipunku), this opportunity can only be had by those who do the Inca Trail to have a unique view of Machupicchu.