Once a year photographer Giora Dan offers his services for free to non-governmental-organisations, taking him to some of the most deprived parts of the world.
"It gives meaning to my work. I did a lot of travel photography and documentary photography before, nothing as deep as that, nothing I'd seen make as much change," he told Newshub.
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In 2017 and 2018 he went with Save the Children to Daulatdia in Bangladesh; four hours from the capital Dhaka and considered the world's largest brothel, it's home to an estimated 1600 sex workers, but also a school.
His work explores the contrast between the conditions the schoolchildren and their mothers live in, but also the hope an education brings.
"The brothel itself doesn't have a lot of hope inside, it's a pretty disturbing place to visit. The school on the other hand, that's run by Save the Children, is a very hopeful place," he says.
Dan's work in Daulatdia forms the centrepiece of a new exhibition at Wellington Museum, celebrating 100 years of Save the Children.
"I'm pretty happy to be exhibited, for a working photographer it's kind of the highest achievement," Dan says.
Running until May 26th, 100 Years of Child Rights is part of Photival - Wellington's documentary photography festival, which highlights social, economic, and environmental issues.
"The rights of children still aren't met a hundred years later, and especially what we do in Bangladesh, which these photos are about, really important for people to understand that we're still doing this work and there's still a lot to be done," says Save the Children's international programme director Andrew Johnston.
Johnston says the exhibition can be more effective at spreading the word than a bunch of reports and statistics.
"One photo can say so much. I love to talk to people, I love all these ideas, but really we can just show people how much we can do for one child's life."
And though Johnston's not a professional photographer, he's got a picture in there too.
"I just took a million photos on my iPhone, so I'm just lucky!" he explains.