Assertion: pyramid's volume | /r/HasProperty | estimated at over 4.45 million cubic metres
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text: According to the Guinness Book of Records, it is in fact the largest pyramid as well as the largest monument ever constructed anywhere in the world, with a total volume estimated at over 4.45 million cubic metres, even larger than that of the Great Pyramid of Giza in Egypt, which is about 2.5 million cubic metres.