Why has the construction of the Sagrada Família basilica in Barcelona taken more than a century?

The construction of the Sagrada Família basilica in Barcelona has taken over a century due to several factors. Designed by Antoni Gaudí starting in 1883, the project was radically transformed from its original Neogothic plan into a unique architectural work combining Gothic inspiration with modern engineering and religious symbolism. Gaudí's innovative structural system, known as equilibrated, was complex to implement.12

Further delays occurred when many of Gaudí's models and plans were destroyed during the Spanish Civil War (1936–39). The basilica is funded entirely by private donations and ticket sales, which has also influenced the pace of construction. While the main structure is expected to be completed in 2026, the centennial of Gaudí's death, work on decorative elements and a monumental staircase is projected to continue into the 2030s.31