The Classic Inca Trail Trek to Machu Picchu is famous for being one of the world’s ten best hikes! Walk in the footsteps of the Inca as you discover astonishing ecological diversity and a wealth of archeological treasures. The Machu Picchu Historic Sanctuary covers 32,952 acres and is home to a network of Inca trails, scores of archeological sites, 10 ecological zones (from glacial peaks to tropical forests), over 450 species of birds, and 200 species of orchids, as well as the legendary citadel of Machu Picchu!