Your invitation to the Marrakech Congress

With just a few months to go before the 18^th OWHC Congress, which will take place from October 26 to 29, 2026, in Marrakech, Morocco, the mayor of the host city, Ms. Fatim-Ezzahra El Mansouri, along with the Mayor of Quebec City and President of the OWHC, Mr. Bruno Marchand, invite you to participate in this event, which will mark a decisive milestone for our Organization.
Invitation letter to member cities

Registration and Official Website of the World Congress

You can now register for the 18^th OWHC Congress. Preliminary program, registration information (hotels, visas, etc.), and the registration link are available on the official website:
Official Website of the 18th World Congress

2026 Loyalty Reward Program

In accordance with the Organization’s principles of solidarity, the Loyalty Reward Program is designed to encourage and facilitate the participation of cities that lack the necessary resources to cover part of the travel, registration, or accommodation expenses in Marrakech.

To submit your application, your city must:

• Have been a member in good standing for the years 2024, 2025, and 2026
• Have the mayor’s application duly signed, confirming his or her attendance (or that of his or her representative) and the composition of the delegation

Please read carefully all the details contained in the 2026 Loyalty Reward Program, particularly the application procedure, before contacting us
2026 Loyalty Reward Program

Applications must be submitted no later than September 18, 2026. Given that the budget is limited and airfare costs are rising, we encourage you to submit your application as soon as possible.

“The New Urban Process: Toward Habitability in Historic Centers”

At the heart of the Congress, the Symposium will lead members to take a new step in the OWHC’s collective initiative: the adoption of the New Urban Process, designed to support cities in improving the habitability of their historic centers. The Congress will also offer numerous opportunities for dialogue among mayors, elected officials, decision-makers, and professionals: panels, workshops, bilateral meetings, networking, and opportunities for cooperation.