Multi-use complex designed by the American firm of Skidmore, Owings & Merrill in the 1970's, contained a shopping mall, the elegant Carlton Hotel and the tallest office building in Africa, a 50 story office tower (223 metres/731 feet). When the fortunes of downtown Johannesburg declined severely in the 1990's, The Carlton Hotel closed and has remained vacant since then.
Wikipedia article:
http://en.wikipedia.org/wiki/Carlton_CenterCategory:
tower building office building