On 17 April 1958 the first Expo was opened in Brussels after the World War two where it was inaugurated Atomiumot. Atomium presents an iron crystal lattice consisting of 9 atoms in 165 billion magnification. The 9 spheres of the 102 metres of tall creation 23 metres long pipes connect it. The single elevator which can be found in the 2400 ton constructions, which carries up the visitors under 25 seconds into the restaurant of the building, and onto his tallest dot. André Waterkeyn by way of a Belgian architect one of planned Atomium, which Brussels is since then, most known symbols, the scientific improvement, the beginning of the atomic age and the peaceful use of the nuclear power meant to symbolise.