Brazil's white dune field fills with turquoise rain lagoons for a few months each year and then loses them to the sun. Here is how to time the visit, choose a gateway and follow the park rules.
Fernando de Noronha rewards deliberate planning: two separate visitor charges, limited tide-pool slots and seasonal seas shape everything from your beach choice to the length of your stay.
Where a city of samba, sand and granite peaks gives way, two hours down the Costa Verde, to a car-free island of rainforest and impossibly clear water.