The 18th OWHC World Congress will bring member cities together in Marrakech under the theme “The New Urban Project: Toward Habitability of Historic Centers”. A pivotal moment for the Organization, it will mark the adoption of the NUP and open up new political and operational prospects for the OWHC.

The New Urban Project (NUP) is a collective initiative led by the cities of the OWHC to revitalize the habitability of historic centers. It will be adopted at the 18th OWHC World Congress in Marrakech in 2026.

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