The Marble Towers is a skyscraper in the Central Business District of Johannesburg, South Africa. It was built in 1973 and is 32 storeys tall. The building has an eight-storey parking garage attached to it. It has the biggest electronic sign in the Southern Hemisphere, measuring 44 metres by 32 metres by 12 metres . It is made out of a mixture of concrete and marble. Its main use is for commercial offices.