Ditch the crowded St. Martin beaches for this uninhabited rock. You need a boat charter to get here—don't pay for the fancy lunch cruise, just find a local skipper. Snorkel the shallow reefs for guaranteed turtle sightings and walk across the island to find the rusted remnants of an old plane wreck. Spend four hours soaking up the sun, but bring your own water and shade. It gets brutal by noon.
