A vast expanse of barren white sand dunes enclosing vast freshwater lagoons, Brazil's Lençóis Maranhenses is a place of otherworldly splendour, said Michael Snyder in Travel + Leisure.

From one beach ringed by gorgeous sand dunes to another one tucked ... consider Praia dos Carneiros in Brazil's northeast. With azure waters, white sand and a grove of coconut trees lining the ...