This is the ultimate in your trail of adventure treks, the Machu Picchu trail in Peru will take you to a height of 7,970 feet amidst a cloud forest. The Urubamba River flows below as you head into some of the world's best preserved Inca ruins. Start in Cuzco where you can check out the local markets, next head across the Sacred Valley and end the trail in Aguas Caliente which is a little Peruvian Village sitting at the base of Machu Picchu. Travel is open at any time; all you need is bug spray, hat and clothes to cover up.