Which company holds the Guinness World Record for the 'Largest Advertising Billboard' ever created?

The advertising world is filled with companies trying to outdo each other, sometimes setting actual Guinness World Records in the process! These extraordinary campaigns push the boundaries of creativity, scale, and ambition. Test your knowledge about the most extreme advertising campaigns that made it into the record books. Do you know which brands went above and beyond to secure their place in advertising history?

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Coca-Cola (with a 20,000 square meter billboard in Madrid, Spain)
Apple (with a 25,000 square meter iPhone advertisement in Dubai)
JCDecaux (with a 26,000 square meter advertisement for Infiniti in Saudi Arabia)
Samsung (with a 23,000 square meter Galaxy phone advertisement in Times Square, New York)