There aren't even any signs in the sprawling Alexandra township to help visitors find their way along trash-strewn streets to get to the house. But the dusty and dangerous slum itself serves as a bleak reminder that nearly 20 years after Mandela became president, many of South Africa's black communities remain mired in poverty.
A trickle of poor Alexandra residents and their children showed up on Saturday to pay their respects to the anti-apartheid champion at a makeshift shrine with a few dozen candles stuck in the ground, two bundles of wilting flowers nearby and three posters of Mandela.
"I'm so sad because he was our father and did so many things for us, fighting for us when people beat us during apartheid," said Pheello Mahlaba, 11. "I'm proud to be from the same neighbourhood where he lived."
The promise of a better life has largely evaded the square-mile Alexandra township. The shabby area is in dramatic contrast to the wealthy, mostly white, Sandton suburb of Johannesburg, whose high-rise towers glisten just across a highway.
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This is not the dynamic South Africa celebrated by tourists and world leaders. Residents say Mandela would be disappointed by the lack of progress since the end of apartheid.
"He won't be satisfied because the place, I can say, it's now a disaster," says Emmanuel Mangena, a community development worker at an alcohol and drug counselling center in Alexandra.
He stayed in Alexandra until 1943, describing the house in his autobiography as "no more than a shack, with a dirt floor, no heat, no electricity, no running water. But it was a place of my own and I was happy to have it ...