In the Nazca desert, about 400 kilometers South of Lima you can find the Nazca lines. They date from the ancient Nazca culture, which is way older than the much more known Inca culture. The area is covered in lines of which some of them represent (animal) figures such as the monkey, hummingbird, spider, a pair of hands and even an image which is called the astronaut. The lines were made by removing the top layer of the earth, showing a layer with a different color.
The images are very large so you have to view them from a small plane. Although many people don’t make it out of the plane without feeling sick (some of the pilots fly rather adventurous and love offering the passengers nice views) it is well worth the ride!