Production and design company GPD (General de Producciones y Diseño) turned the City Hall of Seville into a big screen for a 3D audiovisual show dedicated to Christmas and its symbols. It was the first time a show of this nature has been created with a didactic and educational purpose, not merely entertaining. The Audiovisual Christmas Show created by GPD uses cutting-edge video-mapping techniques and an excellent soundtrack to explore in a fascinating way history, art, culture and the Christmas tradition of the city. The large projection capability has been achieved through a major technical display that incorporates 10 Barco projectors, with a power of 22,000 lumens each. Over 500,000 people witnessed the façade of the City Hall coming to life spectacularly.