Begun in 1882, the Sagrada Família became Gaudí’s radical engineering laboratory. Defying Gothic norms, he replaced buttresses with catenary arches and helicoidal columns, turning geometry into structure. Today, builders use 3D modeling, pre-stressed stone panels and seismic engineering to raise 170-meter spires above Barcelona. A fusion of faith, mathematics and innovation, this is the story of an unfinished megastructure still pushing the limits of construction.
