Boa Vista

Boa Vista is an island in Cape Verde, off the coast of West Africa. It's known for the sand dunes and moonlike volcanic landscapes of the Viana Desert. White-sand beaches include Tortuga and the sprawling Santa Monica. Sea turtles are known to nest on the shore, while the coastal waters are a route for migrating humpback whales. The remains of a 19th-century fort sit on an islet across from the town of Sal Rei.