Old stone ruins and winding corridors are the fascinating remains of the Great Zimbabwe National Monument, the greatest medieval city in sub-Saharan Africa. It provides evidence that prehistoric Africa reached a level of civilisation not suspected by early scholars.
These ancient stone structures are the biggest in Africa south of the Egyptian pyramids. The most well-known structure is the elliptical Great Enclosure, which is at nearly 100m (330ft) across and 255m (840ft) in circumference, the largest ancient structure in sub-Saharan Africa. The legendary walls are 11m (36ft) high and are 5m (16ft) thick in some places. Most scientists believe that it was used as a royal compound.