Lençóis Maranhenses is a national park on Brazil's northeast coast that is famous for its white sand dunes peppered with thousands of temporary, crystal-clear lagoons. The lagoons form every year ...

Why it's incredible: Lençóis Maranhenses looks like a desert, yet it hosts thousands of temporary lagoons. Lençóis Maranhenses is a national park on Brazil's northeast coast that is famous for its ...