The Mercedes Benz Museum, which stands directly outside the main gate of Daimler AG’s global headquarters in Stuttgart, Germany, opened in May 2006 and is based on a “cloverleaf” concept using three overlapping circles with the center removed to form a triangular atrium recalling the shape of a Wankel rotary internal combustion engine. It houses over 1,100 pieces of equipment, which includes 160 motor vehicles – all of them original except for just seven of them.