Praslin, at 11 km (7 miles) long and 4 km (2.5 miles) wide, is the second-largest island in the Seychelles. First settled as a hideaway by pirates and Arab merchants, the island's original name, Isle de Palmes, bears testament to its reputation as home of the Vallée de Mai UNESCO World Heritage Site: the only place in the world where the famous Coco de Mer, the world's heaviest nut, grows abundantly in the wild. Praslin's endemic palm forests shelter many rare species, and the island is a major bird-watching destination. Surrounded by a coral reef, majestic bays, and gorgeous beaches, Praslin is much quieter and less developed than Mahé. With few real "sights," the pleasures of Praslin largely involve relaxing in or exploring its stunning beaches and fantastical forests.