The Torre Agbar is a 38-story skyscraper / tower located between Avinguda Diagonal and Carrer Badajoz, near Plaça de les Glòries Catalanes, which marks the gateway to the new technological district of Barcelona, Catalonia, Spain. It was designed by French architect Jean Nouvel in association with the Spanish firm b720 Fermin Vazquez Arquitectos and built by Dragados. One of the most characteristic elements of the building is its nocturnal illumination. The tower has more than 4,500 luminous devices that can operate independently using LED technology and enables the generation of images on the outside of the tower. The system is capable of creating 16 million colours, thanks to a sophisticated system of hardware and software. It has the ability to quickly transition between colours which can create a shocking effect.