A relatively recent addition to Costa Rica's list of national parks is Tenorio Volcano National Park, home to its namesake Tenorio Volcano as well as its taller sister, Miravalles Volcano, also the highest mountain in the Guanacaste Mountains.

The unique combination of this rugged volcanic landscape, combined with the surrounding tropic forests set the stage for a variety of hot springs, geysers, bubbling mud pools, and the one-of-a-kind Rio Celeste, famous for its sky blue color. It's also an ideal habitat for endangered felines, such as ocelots and the jaguars, and a diverse bird population.