In this series we discover a new way of looking at the most amazing creations of mankind by seriously posing the question, "What would it take if we built it today?" This thoughtful exploration of what has been gained and what has been lost in our race to the future, If We Built It Today is a unique take on the world's greatest building projects. Episodes include… Secrets in the Pyramid Battle of Brooklyn Bridge Ghosts of the Colosseum Hunt for Noah's Ark Rise of the Aqueducts Secrets at the Great Wall Fortress of the Gods Doomsday in Venice Resurrecting Notre Dame（Episode.9 重建巴黎圣母院）