Rio Celeste lies within the Tenorio Volcano National Park. You can access this dreamy river on foot, and although the hike can be a bit challenging, it’s most definitely worth it. The opaque turquoise color of the water is quite special. It is said that Rio Celeste’s truly unique color comes from the reflection of sunlight off a combination of minerals within the river. The rainforest surrounding Rio Celeste is dense, vibrant and full of life. This is a place that should not be missed.