Cayenne's the capital of French Guiana, an overseas région and département of France located in South America. The city stands on a former island at the mouth of the Cayenne River on the Atlantic coast. At the 2006 census, there were 100,323 inhabitants in the urban area of Cayenne (as defined by INSEE), 50,594 of whom lived in the city (commune) of Cayenne proper, and the remainder in the neighbouring commune of Remire-Montjoly. The commune of Matoury (18,032 inhabitants in 1999), wh… (More on Cayenne)