The Prada Transformer by OMA, which is the firms most recent collaboration with the well-known design house Prada,is structurally and functionally a tetrahedron that can be rotated by cranes to four different positions. Each new structural positioning reveals a new floor-plate for each new event; a fashion exhibit, art exhibit, cinema, and fashion show. The interior is a collection of walls that become cielings that become stages that become seating. M.C. Escher would be proud.