Antoni Gaudí was a Catalan architect known for incorporating natural forms like plants and animals into his highly geometric designs. Some of his most famous works in Barcelona include La Sagrada Família church, La Pedrera apartment building, and Parc Güell park. La Pedrera is known for its curved facade and tilework resembling a snowy mountain, while the still-incomplete Sagrada Família combines Gothic and curvilinear styles. Parc Güell originally began as an urbanization project that failed and became a public park featuring Gaudí's signature tile mosaic designs.