Which marketing campaign holds the Guinness World Record for the 'Largest advertising billboard'?

The world of marketing has seen some truly remarkable campaigns that have broken records for their reach, impact, or investment. These campaigns pushed boundaries and set new standards in the marketing world. Test your knowledge of the most extraordinary marketing campaigns that have earned their place in the record books!

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Emirates Airline's 2015 billboard in Madrid measuring 19,740 square meters
Google Chrome's 2018 digital billboard in Times Square covering 25,000 square meters
Coca-Cola's 2019 billboard in Dubai measuring 20,815 square meters
Apple's 2017 billboard in Tokyo spanning 18,500 square meters