Khame Ruins are perhaps the least known of Zimbabwe's five World Heritage sites. Situated just 22 kilometres outside of Bulawayo, Khame was the capital of the Torwa state between 1450 and around 1683, after the capital at Great Zimbabwe in Masvingo was abandoned. It was a trading centre, as attested by the artefacts discovered here and the ruins are not places of defence but were prestige buildings designed to demonstrate Torwa wealth.
Human evidence at the site can be traced back to the Early Stone Age, approximately 0.4 to 1.4 million years ago. http://zimfieldguide.com/bulawayo/khame-previously-khami-ruins-unesco-world-heritage-cultural-site