Which retailer holds the Guinness World Record for the 'largest retail store in the world by sales floor area'?

The retail landscape has witnessed extraordinary achievements that have earned places in the record books. From jaw-dropping sales figures to massive store expansions, retail giants have continuously pushed the boundaries of what's possible in commerce. This trivia question explores a fascinating world record held by one of the biggest names in retail. Test your knowledge about these commercial titans who have made history!

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Costco (Gwangmyeong, South Korea)
The Shinsegae Centum City Department Store (Busan, South Korea)
Walmart Supercenter (Albany, New York, USA)
IKEA (Stockholm, Sweden)