The easiest way to get to the waterfall is to fly to the city of Jaen from Lima, then it takes about four hours to reach Chachapoyas. From there you can book a tour for 20-30$ or find your way up to Cocachimba town and hike to the waterfalls on your own.

Machu Picchu
First you have to reach Aguas Caliente. You can get there from Cusco by train or on foot. From Aguas