Gorgona is an island 27 km off Colombia's Pacific coast where tropical rainforest meets the sea. For decades it housed a state prison -- Colombia's Alcatraz -- until 1985, when it became a national natural park. The isolation that once made it a prison now makes it a sanctuary. The rainforest has evolved separately from the mainland for thousands of years, and the surrounding waters are rich with marine life.
The island is best known for the humpback whales that visit from August to October, arriving with their newborns. Even from the beach you can hear their songs while swimming. But Gorgona rewards at any time of year: walking trails through dense jungle, snorkeling and diving in clear Pacific waters, and a quietness that is hard to find anywhere else.
This is not a resort. The park administration runs the only accommodation -- comfortable rooms for about 80 visitors. There is one restaurant serving three meals a day on a fixed schedule; cooking and fires are not allowed. Every group is assigned a guide who accompanies you everywhere beyond the beach. You cannot walk the trails without boots (snakes are common) or without your guide. Bring snacks if you are staying more than a few days -- the menu gets repetitive.
With average humidity around 98%, expect intense rainfall and misty days. The island is said to have its own personal cloud, permanently sitting on its mountaintop. Blazing tropical sun is equally possible. Pack for everything, and wrap your bag in plastic for the boat ride in.