Nature enthusiasts can explore the botanical gardens underwater limestone caves and offshore reefs of the Bahamas, then gamble at twinkling casinos and delve into pirate lore without ever leaving the islands. In St. Lucia, they can unwind on an isolated beach, then indulge their adrenaline by zip-lining through a rainforest or climbing the Pitons. These are just some of the many unique experiences visitors can have while exploring the islands.