The spheres were originally clad in aluminum, which dulled over time, leading to the 2006 stainless steel restoration.
The structure weighs approximately 2,400 tonnes.
Only the top sphere and the base sphere are permanently supported; the others are held in place by the interconnected tube network.
The Atomium was intended to be a temporary structure lasting only six months for the World's Fair.
Each sphere interior is climate-controlled to maintain a stable environment for visitors and exhibits.
The longest escalator in Europe at the time of the 1958 construction was installed within the structure's tubes.
The Atomium is a 102-meter-tall landmark representing an iron crystal unit cell magnified 165 billion times. Designed by André Waterkeyn for the 1958 Brussels World's Fair, the structure consists of nine stainless steel-clad spheres connected by tubes containing escalators and stairs. Five of the nine spheres are accessible to the public, hosting permanent exhibitions on the building's history and temporary cultural displays. The topmost sphere houses a panoramic restaurant and an observation deck offering views of the Heysel Plateau and Brussels. In 2004–2006, the structure underwent a major renovation where the original aluminum coating was replaced with stainless steel. The spheres are 18 meters in diameter and linked by tubes 3 meters wide and 23 meters long. It remains one of the few structures preserved from the Expo 58 site.
From the park base directly below the structure to capture the full geometry of the connecting tubes.
Book your time slot online in advance to bypass long ticket office lines.
Use the stairs instead of the escalators between certain spheres for unique architectural perspectives.
Visit the panoramic restaurant sphere during sunset for city views.
Attempting to visit without a pre-booked ticket during peak holiday seasons, as walk-up entry can be restricted.
Open daily, including public holidays.
