Atomium

Story

The Atomium was never meant to last. André Waterkeyn designed it in 1955 as a temporary centrepiece for Expo 58 — a six-month wonder, then demolition. Instead, Brussels kept it, neglected it for four decades, and eventually spent €26 million putting it back together between 2004 and 2006. The renovation changed something fundamental: the original aluminium cladding, already tarnished, came down sphere by sphere, replaced with stainless steel — primarily iron, which makes a quiet kind of sense for a structure representing an iron crystal magnified 165 billion times.

The geometry is the thing. Nine spheres arranged as a body-centred cubic unit cell: eight at the corners of an invisible cube, one at the dead centre. Of the nine, only six are open to visitors — the three upper outer spheres carry no vertical supports and stay closed to minimise the structural load of foot traffic. That absence is part of the logic. Waterkeyn's original plan called for no leg supports at all on the lower outer spheres either, but wind tunnel tests revealed that an 80 mph gust would topple the whole structure. The support columns appeared quietly, a concession to Belgian weather.

At night, LED strips integrated into the steel meridian plates of each sphere light up in sequence — a visual approximation of an electron ranging around its nucleus. Ingo Maurer, the German industrial designer, handled the interior lighting after the renovation. The central tube still carries a lift that once ran at 5 metres per second, fast enough to put 22 people at the top sphere in 23 seconds — the fastest in Europe when it opened.

The name itself is a portmanteau of atom and aluminium, coined before the aluminium was gone.