Devil's Island, part of the Îles du Salut in French Guiana, is notorious for its history as a penal colony. Visiting requires a boat trip, typically from Kourou. Accessibility on the island is limited due to the ruins and natural terrain; guided tours are highly recommended to understand the island's history and navigate the area safely. There are no specific seasonal restrictions, but the weather can be hot and humid year-round. A day trip, including transportation, can cost approximately $100-$200 USD. A typical visit lasts around 4-6 hours, focusing on the prison ruins and surrounding natural environment. Note that due to the sensitive historical context, respectful and informed exploration is encouraged.