No trip to Barcelona is complete without visiting Antoni Gaudí’s grand, yet unfinished masterpiece, La Sagrada Familia. As one of the most iconic sites in Barcelona, this ornate cathedral left me completely speechless with its towering spires, intricate carvings, and symbolic architecture that integrates themes of nature, science, and faith. I highly recommend joining a guided tour to fully understand the biblical symbolism and meticulous details applied in the ongoing construction. Don’t miss ascending one of the towers for a true bird’s eye view over the city too! The brilliant combination of artistry and spirituality makes La Sagrada Familia a can’t miss stop on any tour of Barcelona’s top 10 attractions.