Which retail location holds the Guinness World Record for the largest department store by retail floor space?

The retail industry has set some mind-boggling world records that showcase innovation, ambition, and sometimes pure extravagance. From the largest stores to the most expensive marketing campaigns, these achievements have earned their place in the Guinness World Records. Test your knowledge about these extraordinary retail accomplishments that have pushed the boundaries of what's possible in commerce.

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Macy's Herald Square (New York City, USA)
Shinsegae Centum City Department Store (Busan, South Korea)
Harrods (London, UK)
Galeries Lafayette (Paris, France)