Fort-de-France Cathedral (Cathédrale Saint-Louis de Fort-de-France) is a Roman Catholic cathedral, and a national monument of France, located in the town of Fort-de-France, capital of Martinique. This article is about the history and organisation of the cathedral This article is about the country For a topic outline on this subject see List of basic France topics. Fort-de-France is the Capital of France 's Caribbean Département d'outre-mer of Martinique. Martinique is an Island in the eastern Caribbean Sea, having a land area of 1128 km²