Serigraph that represents the facade of the Casa Milà, “La Pedrera”, made by the catalan artist Aurora Altisent. The main theme of her drawings is the city of Barcelona and its historical buildings.-1926); these are drawings full of perfection and mastery.

The Pedrera building presents a new structural conception based on its imposing stone facades designed as a continuous wall suspended on the slabs without any structural function. Windows, balconies and tribunes are impressively composed, varying throughout the day, according to the path of the sun. Gaudí, in an act of rebellion, dissolves the geometry of the chamfer of Ildefonso Cerdà's Eixample layout.