Casa Mila or La Pedrera (stone quarry in Catalan) was the last great civil work with Gaudí performed before dedicating all his time to the construction of the Sagrada Família. This most unusual building was built between 1905 and 1910 and declared UNESCO World Heritage in 1984. Casa Mila is by far one of the most remarkable works of Antoni Gaudí. The design is taken from his own designs as well as from nature.