Casa Milà, better known as La Pedrera, (meaning the 'The Quarry'), is a building designed by the brilliant Catalan architect Antoni Gaudí and built during the years 1905–1910, being considered officially completed in 1912. It is located in Barcelona, Catalonia, Spain. It was a controversial design at the time for the bold forms of the undulating stone facade and wrought iron decoration of the balconies and windows, designed largely by Josep Maria Jujol, who also created some of the plaster ceilings. Architecturally it is considered an innovative work for its steel structure and curtain walls – the façade is self-supporting. Other innovative elements then were the construction of underground car parking and separate lifts and stairs for the owners.