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The Great Pyramid, Egypt
A glance at the pyramids of Giza and you’ll be perplexed what ancient Egyptians were made of. It also explains why the Great Pyramid is one of the world’s seven wonders. Completed in 2560 BC, the 481ft tall pyramid is the largest of all the constructions in the Giza complex, and was a record-holder for the tallest structure ever for over 3700 years.