The steel structure looks like it came from outer space and landed here in front of Gyeonghui Palace in central Seoul. As unlikely as it sounds, it will house four different cultural exhibitions over the next five months. The Prada Transformer, as it is named, has finally arrived in Seoul. It is a huge tetrahedron - a geometric shape with four triangular sides - and has a hexagon, cross, rectangle and circle on each side. At 20 meters (65.6 feet) high and weighing 180 tons, it’s a sizable structure, wrapped in white, semitransparent fabric. However, the edifice, which can accommodate 200 spectators, will shift position several times between expositions, though not while people are inside. In the topsy-turvy Transformer, the ceiling of one exhibition becomes the floor of the next, and the floor of the current event can become a wall.