Casa Milà, also known as La Pedrera, is a building in Barcelona, Spain designed by renowned Catalan architect Antoni Gaudí. Completed between 1907-1910, the building features an undulating stone facade, wrought iron balconies, and a roof with fanciful chimneys. Inside, Gaudí designed the interior spaces and some furniture to flow in undulating waves. The building was originally residential but now houses apartments and a museum. Casa Milà broke new ground architecturally with its expressive forms and novel use of materials like stone, brick, iron and ceramics.