Experts investigate some of the world's most epic monuments across the globe from America, Egypt, Rome and beyond. What engineering techniques were used to build these iconic structures? Coming up in this series, experts reveal the hidden secrets of these constructions using technology to blow them apart and understand what lies within. From lost tombs in the Valley of the Kings, new discoveries made beneath the tomb of Jesus Christ, and joining the hunt for King Arthur's castle, this series is set to blow your mind.