The Atomium is a monument in Brussels, originally built for Expo '58, the 1958 Brussels World's Fair. Designed by André Waterkeyn, it stands 102 meters (335 ft) tall. It has nine steel spheres connected so that the whole forms the shape of a unit cell of an iron crystal magnified 165 billion times.
Monuments, Buildings - Novelty / Interesting
Links: en.wikipedia.org, virtualglobetrotting.com