On the grounds of a 19th-century Danish sugar plantation, first inhabited by pre-Columbian Indians, the island's only botanical garden is home to over 1,500 species of tropical plants. Old stone ruins are interspersed with the plants on the gardens 16 acres. A rainforest walk and cactus garden are some of the attractions. A gift shop sells interesting items. Restrooms are available. Admission costs vary from USD8 for adults to USD1 for kids under 12. No credit cards are accepted.