Two great South Africans (Nontsikelelo) Albertina and Walter (Ulyate) Sisulu are immortalised in a clay sculpture by Marina Walsh (2009) installed in a small square on the historic Diagonal Street. The 2.7 tonne artwork of this couple who sit holding hands commemorates the enduring love they had for each other and for the nation. Both powerful anti-Apartheid activists, Ma Sisulu as she was affectionately known, was admired for her compassion and work to improve the lives of small children and the elderly while Walter served as Secretary-General and Deputy President of the African National Congress, and was imprisoned for 25 years alongside his great friend Nelson Mandela on Robben Island. The site is across the street from where Walter once had his real estate office. Albertina died in 2011 while Walter passed away in 2003.