Rainbow Mountain
With almost as many names as colors, Rainbow Mountain, aka Vinicunca, aka Montaña de Siete Colores (Mountain of Seven Colors), is a fairly recent addition to Peru's top-attraction list. Until a few years ago, the multicolored mountain was just another snow-capped peak. When the ice and snow that covered the mountain started to melt (this might be the one time in your life that you will want to say "thank you, global warming"), the water mixed with minerals in the ground like iron sulfide, chlorite, and goethite to create the striking stripes of color. Rainbow Mountain is about three hours from Cusco by car, and requires a strenuous, high-altitude hike, so you will need to plan your visit with time to acclimatize first. Do yourself a favor and book a tour. This is a full day's adventure and hiking in high altitude can really knock you out; you'll appreciate the chance to nap on the drive back to your hotel.
Many photos of this mountain are heavily Photoshopped so do not be disappointed if the mountain is not quite as vivid as you have been led to expect. Also, dull weather conditions can dampen the effect, so try to plan around good weather if you have flexibility in your schedule.
