The Catalan architect Antoni Gaudí (1852-1926) is the best known practitioner of Catalan Modernism. He was not much for straight lines. Most of his works, including the church called Sagrada Família, are in Barcelona.
✑ ◦List of Gaudi buildings
The great book, always open and which we should make an effort to read, is that of Nature.
Form does not necessarily follow function. - Gaudí