Tenorio Volcano National Park is a National Park in the northern part of Costa Rica, which forms part of the Arenal Tempisque Conservation Area. The jewel of the National Park is the Tenorio Volcano, from which it receives its name. (Wikipedia)
The Park is also known for natural hot springs, hiking trails, wildlife, and most notably, Rio Celeste Waterfall. The 98-feet tall waterfall powerfully plunges into a pool of bright blue water surrounded by dense tropical forest. It's a truly striking sight.