Cayenne is the capital of French Guiana

Cayenne (/keɪɪˈɛn/; French pronunciation: ​[kajɛn]) is the capital of French Guiana, an overseas region and department of France located in South America. The city stands on a former island at the mouth of the Cayenne River on the Atlantic coast. The city's motto is "fert aurum industria" which means "work brings wealth".

Consulates in French Guiana

Australian, British, Canadian, US, and EU citizens do not need visas for a trip to French Guiana as a tourist and providing you have proof of a return ticket, you can stay in the territory for up to three months. You must possess yellow fever vaccination certificate and your passport must be valid for at least three months post-travel. No other shots are required, athough protection against endemic diseases is always ideal.