• SCALE THE TALLEST BRIDGE in the world, the sublime Millau Viaduct in Southern France.
• FIND OUT WHY the presidential sculptures on Mount Rushmore are cut off at the neck.
• PEEK INSIDE the Florence Cathedral, a masterpiece of Renaissance architecture and a triumph of engineering.
• TAKE A CONTINENT-BY-CONTINENT JOURNEY, exploring the innovations, ingenuity, and imagination created by different cultures.