Some of the most impressive buildings and cities ever made by humans can be found in Africa: the ruined city of Great Zimbabwe, Mapungubwe in South Africa, Kenya's Gedi Ruins and Meroe in Sudan. Perhaps the most awe-inspiring of these are the last remaining of the Seven Wonders of the Ancient World, the Great Pyramid of Giza, in Egypt.

This should come as no surprise. Africa has an extensive archaeological record, extending as far back as 3.3 million years ago when the first-ever stone tool was made in what is today Kenya. The continent's cultural complexity and diversity is well established; it is home to the world's oldest-known pieces of art. And, of course, it is the birth place of modern humans' ancient ancestors, Homo sapiens.

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