Poço Azul is a must for those visiting Chapada Diamantina. A crystal water-filled cave where it is possible to see the rocky bottom, even at 16m deep.
The paradise with clear blue water and white sand on the pictures is Los Roques, Venezuela.
There is not much infrastructure in Fernando de Noronha, everything is kind of rustic, but who cares about comfort when you are in a paradise-like beach? The island is rather small, and the city is crossed by a 7 km-road. Vegetation pretty dry most of the time, due to high temperatures and little rain.