The Atomium is an iconic building in Brussels originally constructed for Expo '58, the 1958 Brussels World's Fair. Designed by the engineer André Waterkeyn and architects André and Jean Polak, it stands 102 m (335 ft) tall. Its nine 18 m (59 ft) diameter stainless steel clad spheres are connected so that the whole forms the shape of a unit cell of an iron crystal magnified 165 billion times 1).
Tubes connect the spheres along the 12 edges of the cube and all eight vertices to the centre. They enclose escalators and a lift to allow access to the five habitable spheres which contain exhibit halls and other public spaces. The top sphere provides a panoramic view of Brussels. CNN named it Europe's most bizarre building 2).