If tall mountains are what you are looking for, Rainbow Mountain in Peru, which also tops out at more than 5,000m, is another giant that you can hike up to -- typically on a daytrip from the city of Cusco. From Machu Pichu, you can visit other spectacular Inca sites such as Sacred Valley, where you can see impressive Ollantaytambo and Moray ruins, Maras Salt Mines, and much more. The stunning Ig...