The Citadelle was commissioned in 1805 by Henri Christophe and completed in 1820, the fortress was built as part of a system of fortifications designed to thwart potential foreign incursions; notably the French. The Citadel serves as universal symbol of liberty, being the first monument to be constructed by black slaves who had gained their freedom. Designated by UNESCO as a World Heritage Site in 1982 along with the Sans-Souci Palace, also commissioned by Christophe, the fortress is universally regarded as a landmark of Haiti.

The mission encompasses all phases from the preliminary project to the preparation of the consultation dossier for companies. The project aims to address the following issues:

• Reduction of vulnerability and seismic strengthening.
• Conservation and repair of the Monuments in accordance with the principles of restoration of heritage structures.
• Revision and creation of networks essential for the operation and maintenance of the site, including rainwater, sanitation, photovoltaic energy production, and the valorization of rainwater.
• Scenographic design of an interpretation route and the development of exhibition spaces aiming to highlight collections and the site, as well as understanding the national history of Haiti.
• Improvement of access to sites and treatment of landscape integration.
• Measures to facilitate the maintenance, upkeep, and conservation of structures and the site in general.
• Fire safety, personal safety, and accessibility of public spaces.