The Atomium, designed by engineer André Waterkeyn to represent Belgium at the Universal Exhibition in 1958 in Brussels represents an iron crystal, magnified 165 billion times. These nine large spheres connected by 20 tubes are standing on three enormous bipods and dominates with the height of 102 meters the entire Heysel plateau. The Atomium was intended to last only for the six months of the Expo, from 17 April to 19 October 1958. Fifty years on, this architectural masterpiece remains one of the world's best-known and most visited buildings