evidence: Fun fact: French Guiana is the only territory of the mainland Americas that is still officially part of a European country and the European Union. French Guiana is an overseas department and region of France! [...] The Maroni River forms a natural border with Suriname, flowing through the heart of French Guiana’s lush rainforests. Boat trips down this river offer an intimate glimpse into the lives of the Maroon communities, descendants of escaped African slaves who’ve retained their unique cultural heritage. [...] Situated on the Maroni River’s banks, Maripasoula is an exceptional place to encounter French Guiana’s indigenous Amerindian and Maroon cultures. It holds the title as France’s largest commune by land area and is accessible only by river or air.