The Salkantay Trail to Machu Picchu is an absolutely stunning display of raw nature. From 15,000 foot peaks to lush rainforests, one day of the Salkantay trek was particularly beautiful. See pictures below, including a bonus shot of once we made it to Machu Picchu two days later.
To get there, the best mile redemptions for U.S. residents are to Cusco using American or United (and their respective partners). A paltry 35,000 American or 40,000 United miles will get you a round-trip ticket in economy. That is extremely low for an international flight. In business class, 60,000 or 70,000, respectively, in business class. Expect $5 to $65 in booking fees.