Acierta Retail delivered the design, technical development, production, and installation of the 2023 Christmas decorations for El Corte Inglés' luxury areas at the Serrano and Castellana stores in Madrid. Conceived as a large-scale architectural intervention, the project transformed both façades and the Castellana atrium into immersive festive environments through bespoke fabrication, integrated lighting, and a celestial-inspired visual narrative, combining monumental sculptural elements, custom aluminium structures, and more than 1.3 kilometres of LED lighting to create a memorable Christmas experience across two of Madrid's most iconic retail destinations.