Ancient history is full of mysteries, and Machu Picchu is one of the most interesting topics. The amazing and incredible Machu Picchu is explored, specifically addressing what secrets does this sacred place holds? What civilization built the citadel at Machu Picchu? How did science shape the Inca civilization? Why are people still visiting this place, and what are the popular cultural depictions of Machu Picchu?You will discover the answers to these questions and more in What in the World is Machu Picchu?, a compilation of student essays.