LISBON - The spicy scent of Cape Verdian cuisine wafts down its winding alleyways, where palm trees sway among a colourful bric-a-brac of houses perched high above Lisbon.
Welcome to the infamous Cova da Moura, Portugal's answer to the favelas of Brazil - now turned tourist magnet.
Taxi drivers refuse to venture after dark into the belly of Cova da Moura, a drug-trafficker's haven half an hour north of the capital that was long seen as one of Europe's most dangerous slums.
But by day tourists - around 1,000 a year including academics, architects and sociologists - are now willing to pay the five euro price for a tour of its narrow, history-filled streets.
On this autumn day, a group of a dozen Germans stand poring over giant graffiti of Nelson Mandela and Martin Luther King.
"These are idols for many of us," explains their 27-year-old guide Reginaldo Spinola, originally from the once-Portuguese Cape Verde islands like three quarters of local residents.
Inspired by the favela circuits launched in Brazil in recent years, the visits have a twin goal: "to clean up the neighbourhood's image as a drug and crime haven, and give the local economy a boost," said Miguel Lourenco, who runs the tourism project "Sabura".
"This isn't Montmartre or Barcelona's gothic quarter, but our cultural heritage can take visitors into the world of Cape Verde, its food, crafts and music."
Baseball cap twisted backwards, Spinola shakes hands and exchanges a few words in Creole with neighbours, as he tells the story of Cova da Moura.
"This is a little village of 7,000 people - everyone knows everyone else."
Selling drugs for food
The first to settle the hill above Lisbon were Portuguese returning from the colonies. But after Cape Verde's independence in 1975, they were joined by a mass influx of immigrants who built homes there illegally.
Along with men and women from former colonies Angola and Guinea Bissau, they flocked to Portugal at a time when it was hungry for cheap labour.
Forty years on, with the economic crisis biting hard, Cova da Moura is plagued with unemployment. Those who have work struggle as badly paid labourers or cleaners.
"A lot of young people sell drugs to put food on their families' tables," said Spinola.
Some have left to seek better fortune elsewhere, in Switzerland, Germany or France. "Cova da Moura is a gateway to Europe," Spinola said.
Others - armed with Portuguese qualifications - have headed home to Cape Verde, even though life there is now twice as expensive as Portugal.
Godelieve Meersschaert first came to Cova da Moura from Belgium in 1982, as a young psychologist looking for a new experience.
"I liked the neighbourhood, and I'm still here," she said.
Together with her husband Eduardo, originally from the Azores islands, she founded an association called Moinho da Juventude - Mill of Youth - which has been working to improve local living conditions, including fighting for access to running water and sewage.