The Spanish explorer Christopher Columbus set sail for America in 1492 from Palos de la Frontera.
Today, the port town is a destination for many migrant workers.
The region is famous for the production of strawberries.
some 250,000 tons of the fruit are exported from here to Europe and across the world.
Seasonal workers are brought over from North Africa on official programmes.Most are women.
In the strawberry fields, thousands of women are brought over the Mediterranean from Morocco to pick the fruit.
Many cannot read and write.
Campaign groups and labor unions have filed complaints about their working conditions.
The cooperative group Freshuelva is one of the biggest employers with some 5,000 workers, mostly female on its books in 2021.
"Controls are set by the trade unions and inspections which naturally oversee everything to ensure that it is all done correctly.
But the regional Andaluz Labour Union represented in Hueva by Jose Antonio Brazzo has made many complaints
但由Jose Antonio Brazzo代表的韦尔瓦地区Andaluz工会已经提出了诸多投诉，
over the treatment of the workers and the condition of their housing.
This accommodation owned by the fruit farm Karasu has been officially denounced by the union.
They say up to 10 workers live in a single housing unit made up of five rooms.
There is one shared bathroom and no drinking water.
"No country in Europe is this allowed.They would close the company but not here.Here it is denounced and nothing happens."
Karasu denied the housing was in poor condition, but did not reply to repeated requests for further comment.
Labor unions say working conditions here are tough.
On seeing the union representative, this worker asks for painkillers.
"Many women have been here for many years and they suffer from chronic back pain and possibly hernias.
But they do not go to the doctor.No one does anything for them.The boss does not take them to the doctor."
This year, twelve and a half thousand women came from Morocco to harvest strawberries.
According to Freshwelva, women are preferred because they are more likely to return to their families in Morocco after the contract ends rather than stay illegally in Spain.
"The link they have with their country of origin, in this case, Morocco encourages them to return."
Outside the strawberry farms, in public areas, there are informal settlements where undocumented migrants wait for illegal offers to work on farms.
They live with no water or electricity.Fires occasionally break out.A recent blaze here claimed the lives of two people.
Most of Huelvas annual strawberry crop is exported to Europe
where the consumers are often unaware of the toil and sacrifice that goes into each box.