I know disco balls are a thing of the '70s, but the largest one in the world deserves some attention. It has been conveniently placed in the City of Lights, Paris. It gives an impressive sight, especially during night time, when several spotlights make it sparkle. Just to give you hint of how big this thing is: it has a diameter of 7.5 meters and it is made up of 1000 mirrors.
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