Rio Celeste or the Blue River is an incredible waterfall located in the Tenorio Volcano National Park, in Costa Rica. A waterfall straight out of a fairytale, Rio Celeste has often left all those who set their eyes on it to stand dumbfounded. After an intense trek through the National Park, one is rewarded with the site of a strong gushing river crashing 60 feet down into a vibrant blue pool of liquid. The volcanic minerals composed of aluminium, silicon and oxygen suspended in the water and the rocks beneath reflect the sunlight in such a manner that the water appears striking blue colour.