The vision of HSB Turning Torso is based on a sculpture called Twisting Torso, which is a white marble piece based on the form of a twisting human being, created by Santiago Calatrava. In 1999, HSB Malmö's former managing director, Johnny Örbäck, saw the sculpture in a brochure presenting Calatrava in connection with his contribution to the architectural competition for the Öresund Bridge. It was on this occasion that Johnny Örbäck was inspired to build HSB Turning Torso. Shortly afterwards he travelled to Zurich to meet Calatrava, and ask him to design a residential building based on the idea of a structure of twisting cubes. This is a solid immobile building constructed in nine segments of five-story pentagons that twist relative to each other as it rises; the topmost segment is twisted 90 degrees clockwise with respect to the ground floor. Each floor consists of an irregular pentagonal shape rotating around the vertical core, which is supported by an exterior steel framework. The two bottom segments are intended as office space. Segments three to nine house 147 apartments. The apartments were initially supposed to be sold, but insufficient interest resulted in the apartments being let. The owner has several times unsuccessfully tried to sell the building. The construction costs were almost double the estimate.