6 Ancient African Architectural Marvels Built Before Greece or Rome Existed : The recent discovery of an ancient circular monolithic stone structure site in Mpumalanga, South Africa, is thought to be at least 75,000 years old, pre-dating any other structure on earth, according to South African author and politician Michael Tellinger. Tellinger founded the Ubuntu Party in South Africa and is a self-proclaimed authority on ancient civilizations of southern Africa.