This spellbinding program profiles eight of the world's most magnificent man-made creations that you can visit on foot, including the Colosseum, a haunting symbol of the Roman Empire at its most exalted and its most depraved; Machu Picchu, the extraordinary and enigmatic Inca ruin; The Great Wall ofChina, 3,000 miles of brick and stone and so large it is visible from space; The Eiffel Tower, the world's tallest structure for 40 years and once targeted for demolition, and Mount Rushmore, a monument to the founding principles of a democratic nation that took more than 300 workers 14 years to complete.
