From Cayo Las Brujas, the causeway passes a dolphinarium and the next significant cay, Cayo Ensenachos, where the beach is the exclusive domain of guests at the Iberostar Ensenachos. Several bridges beyond Ensenachos, about 15km from Cayo Las Brujas, the causeway concludes at Cayo Santa María, home to the remaining nine hotels built on the cays, all of them slung along a stunning 15km beach which Fidel Castro is said to have described as superior to Varadero.

At the far eastern end of Cayo Santa María, the splendid Playa Perla Blanca is one of the most untouched yet still accessible beaches in the whole of the northern cays. It’s a bit of a trek – at the end of a dusty track that takes over from the asphalt road, 52km from the mainland in all, but there are several kilometres of beach and the sand is as fine as it gets in Cuba.