The journey to these remote, beach-blessed islets, the northern cays, along a 50km-long causeway skimming above clear waters, is reason enough to visit. But the star attraction is the paradisiacal, creamy soft sands of Playa Perla Blanca. Situated at the far eastern end of Cayo Santa María, this pristine beach feels remote and unspoiled, in part due to the absence of any facilities.