In Haiti, the Citadelle Laferrière, a fortress standing on a rocky spur 900 m above sea level, is of great architectural and symbolic value. The edifice was constructed by Henri Christophe, the first black king in the Americas, following the country’s independence from France. Its role was to protect the country against any renewed attempt at French annexation. The fortress is still today the largest on the new continent. It houses a Haitian war prize: a unique and extensive collection of French bronze cannons. Following an earthquake in 1842, cracks appeared in the building and these are now threatening its integrity.
In 2014, at the request of the Haitian administration and in partnership with the World Bank, Iconem and GeoScan 3D carried out 3D modelling of the edifice and its condition. On such a site, where the rugged terrain and inaccessible nature of the citadel prevent photography from ground level, aerial photography from drones is particularly suitable.