Bonito,Mato Grosso Do Sul Brazil

Bonito is a municipality located in the Brazilian state of Mato Grosso do Sul. Its population was 17,275 (2007) and its area is 4,934 km².Bonito is in the middle of a region which is being discovered as "Caribe do Centro-Oeste" (Caribbean of the Central-West) due to the unbelievable blue colour of its waters.
Owing to the enormous quantity of limestone in the ground, the water of these rivers passes through a real natural filter where impurities are deposited at the bottom of the river bed, leaving the rivers to be some of the clearest and most transparent in the world. A number of fish and plant species have adapted to this high calcium environment, so that all rivers teem with life. The government of the region has consciously aimed to promote tourism and develop infrastructure for receiving and directing tourists, while strictly controlling the numbers of tourists allowed. These limitations are aimed at preserving the rich natural beauty of the area, maintaining popular tourist sites as close as possible to their natural state.

Source:-Wikipedia