In 2003, a retired man planted trees on forgotten land alone; 20 years later, it had become one of Sao Paulo's largest urban forests

• PC: AI generatedBetween crowded roads and layers of concrete in São Paulo, a long strip of greenery now breaks up the city’s urban landscape.
• The area was not always a place where people came to walk beneath trees or watch birds.
• For years, it was an abandoned stretch of land known for neglect and insecurity.