Millions flock to Spain’s Sagrada Família to marvel at its towering tree-like columns, remarkable displays of light and ornate stonework. One hundred years after the master architect Antoni Gaudí’s death, Spanish journalist Lluís Amiguet explores why so many people, regardless of faith, come to visit a Barcelona church that is still far from finished. Amiguet hears how Gaudí was inspired by what he called “The Great Book Of Nature” and learns how this might have been of particular interest to visitors from Japan who were among the first to come and see Gaudí’s work. He meets Japanese architect Hiroya Tanaka who believes there are secret codes hidden within Gaudi’s plans, talks to Òscar Tusquets who organised a petition for work to stop on the church before suddenly changing his mind and he tours the towers of the world’s tallest church.