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5,762,209,000 square perches is about 2,500,000 times as big as Windsor Castle
In other words, the size of Windsor Castle is 0.000000370 times that amount.
(Windsor, England) (total site area)
One of the official residences of the British monarch, Windsor Castle measures about 2,100 square perches. It is the largest inhabited castle in the world and is also the oldest in continuous use, having been occupied since it was built by William the Conqueror about 900 years ago.
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