Antoni Gaudí was a Spanish Catalan architect known as the principal exponent of Catalan Modernism. He designed several notable buildings in Barcelona including Park Güell, Palacio Güell, Casa Milà, Casa Vicens, Casa Batlló, and his most famous work, the unfinished Sagrada Familia basilica. Park Güell was designed as a residential estate high above Barcelona and features architectural elements and gardens integrated into the natural landscape.