This urban centre in Lucerne South, right by Kriens Mattenhof station, emerged as part of a development process that took over ten years. Mattenhof encompasses 275 apartments, more than 21,000 m2 of office space, almost 7,000 m2 of commercial/retail space and a 160-room Holiday Inn Express city hotel. The real estate company Mobimo worked with the cities of Kriens and Lucerne to drive the development of the entire site. Mattenhof has an iconic artwork in the shape of “My elastic eye”: Artist Raphael Hefti has covered the ground in countless microscopic glass pearls that break the sunlight down into the colours of the spectrum, with the result that the viewer’s shadow appears to be accompanied by a holographic, circular rainbow. The sun intervenes in the role of artist, accompanying one’s shadow throughout the district. The work is received in very intimate fashion, as the effect is visible only to the person casting the shadow; the coloured halo at the height of the onlooker’s head height cannot be seen by anyone else. There is a contrast with the shape of the sculpture. The materials have been applied in concentric circular paths, spanning the whole of the Mattenhof area. Raphael Hefti’s work ties together the different buildings, squares and corners of the district, turning it into a place for shared experienced and adding a sensual quality to the architecture.