The flight over the Nazca lines
Created some 2000 years ago by the Nazca population, these drawings are today a major tourist attraction and another UNESCO World Heritage site. The easiest way to see them is by mean of small planes that depart on demand from the Nazca Airport and cost around US$75 per person. A typical flight lasts around 35 minutes and it is itself an interesting experience, as you get to feel everything (the wind, the noise, the movements) way stronger than in a regular airliner.