Traveling allows you to experience different cultures firsthand and shift preconceived notions. The ruins of Machu Picchu continue to astound with mysteries of its purpose and debates around its real function. Adventure seekers can trek the Inca trails for an honest experience of Peru's Incan heritage. Yellowstone's Grand Canyon provides scenic views of falls and uniquely colored pink and yellow rocks, created by erosion over hundreds of thousands of years. The Colosseum was originally an entertainment arena in Rome where gladiatorial fights took place, and it remains standing as a testament to its builders' ingenuity.