Un "museo a cielo abierto" en Túnez

Graffiti decorates the walls of an abandoned building in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the wall of an old house in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the wall of an old house in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the wall of an old house in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the wall of an old house in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the wall of an old house in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the wall of an old house in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the wall of an old house in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the wall of an old house in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates a wall in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the wall of an abandoned building in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates an abandoned structure in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the wall of an abandoned building in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

A graffiti artist sprays the wall of a building in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

A graffiti artist sits near his work in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the walls of an abandoned building in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI

Graffiti decorates the walls of an abandoned building in the Tunisian island of Djerba on July 29, 2014. More than 100 artists from 40 countries were invited by France-based Tunisian artist Mehdi Ben Cheikh to take part in an initiative to turn Djerba's Erriadh district into an �open sky museum�. AFP PHOTO / F NASRI