Held from 17 April to 19 October 1958, Expo 58, also known as the Brussels World's Fair, was the first major World's Fair after WWII. The site is best known for the Atomium, a giant model of a unit cell of an iron crystal (each sphere representing an atom). More than 41 million visitors visited the site, which was opened with a call for world peace and social and economic progress, issued by King Baudouin I.
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