QR City Services is a Communications, Marketing and Interactive Advertising enterprise established in Barcelona.We are specialized in interactive advertising campaigns, using QR Codes (Quick Response) and Augmented Reality (AR) for mobile.Augmented reality is the term given to the technology that allows to combine virtual elements and 3D images with real world elements in order to create a mixed reality in real time.In QR City Services we have taken a step forward in the evolution of the advertising industry and have introduced new possibilities of incorporating Augmented Reality (AR) technology into the world of communications media with advertising and marketing campaigns related to several markets.One of the markets where AR can be well implemented, is represented by tourism and urban maps.