Casa Milà, also known as La Pedrera, is a modernist building designed by the great Antoni Gaudí on the bourgeois street of Passeig de Gràcia in Barcelona. The building’s design and roof-top terrace is a masterpiece in itself resembling a giant sandcastle with intricately crafted peaks and twisted seaweed wrought-iron balconies. Casa Milà is the official name of this work of art, but shortly after it was constructed, it adapted the name La Pedrera, “The Stone Quarry,” because of its rough outer appearance and design that resembles a large, deep pit where stone is extracted. In 1906 the building was commissioned and owned by Pere Milà and his wife Roser Segimon. The building was built between 1906 and 1912 and was the last private residence built by Guadí and his fourth and final work in Passeig de Gràcia. Casa Milà was declared a UNESCO World Heritage Site in 1984 and remains one of the most famous buildings of Catalan Modernisme. The building is now the headquarters of Fundacio Catalunya La Pedrera, which hosts exhibitions and other cultural and educational activities. La Pedrera is now a beacon of information about Gaudí’s life, inspiration and architecture. Gaudí viewed architecture as a total art and paid close attention to every detail, like the railings of the balconies and handles of the door. He was fascinated by nature and geometry and studied and observed it intensively. Gaudí’s love of nature can be seen everywhere in his work, including the attic of La Pedrera, which resembles the skeleton of a python with each arch spaced about 80 centimeters apart. Casa Milà has a self-supporting facade, free-plan flats, an underground garage and a spectacular terrace. It is a prominent example of why Gaudí is one of the most imaginative and daring modernist architects in the world.