GREAT ZIMBABWE

A little less than 30 kilometres beyond the south-eastern town of Masvingo are to be found some of the most extraordinary manmade remains in Africa.

Formed of regular, rectangular granite stones, carefully placed one upon the other, they are the ruins of an amazing complex. The structures were built by indigenous African people between AD 1250 and AD 1450 believed to be the ancestors of modern Zimbabweans.

The ruins at Great Zimbabwe are remarkable; lofty, majestic, awe-inspiring, timeless. The quality of the building in places is outstanding. It was built by craftsmen who took a pride in their work. There is nothing to compare with it in southern Africa.
The two main areas of stone wall enclosures are the Hill Complex, on the long, steep-sided granite hill and the land below this hill where the Valley Enclosures and the Great Enclosure are situated.

The stone walls, up to 6meter thick and 12 meter high, are built of granite blocks without the use of mortar. Two high walls form the narrow parallel passage, 60 meter long, that allows direct access to the Conical Tower.
The Great Enclosure is the largest single ancient structure south of the Sahara.

The legacy of Great Zimbabwe is widespread throughout the region. The art of building with stone persisted in following centuries so that dzimbabwe (a Shona word possibly derived from dzimba woye, literally 'venerated houses') are numerous.
There are at least 150 in Zimbabwe itself, probably as many as a hundered in Botswana, and an undetermined number, yet to be found in Mozambique.
http://en.wikipedia.org/wiki/Great_Zimbabwe