"Buck Island Reef National Monument Pristine, untouched and unforgettable:There's no other way to describe this natural park justoff the northeast coast of St. Croix. Walking trails crisscross the expanse through frangipani and tamarind trees and cacti to beautiful beaches. Turtle Bay, on the western side, wows with its magnificent snorkeling; theprotected waters and massive coral reef are home to more than 250 kinds of fish. Admission numbers are limited each day;advance booking is required."