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Throughout history, Man has always strived to push the envelope and go beyond the limits of his imagination. In line with this, CNN Travel has compiled a list of man-made structures whose concept and execution has reached unbelievable heights. A tribute to the big, the bold and the brave, if you will.
The ancient quarries which furnished Egypt with this stone, and yes. it still can be seen in the modern city of Aswan today. This is where the Unfinished Obelisk is to be found.