My favourite adventure so far has to be in Peru, visiting Machu Picchu and the Inca Trail.
The scenery during the trek was just incredible, and arriving at Machu Picchu is one of those moments you never forget.
If you're travelling to Machu Picchu but not taking part in the trek, then arrive at Aguas Calientes the day before and take advantage of an early start to Machu Picchu before the main crowds arrive.
It's worth a walk up to the Sun Gate to get a view over the mountain. The train back to Cusco with PeruRail is also a must with surprises to be had en route, and incredible views through the panoramic windows.