It has been 25 years since Área de Conservación Guanacaste (ACG) received status as a United Nations World Heritage Site, one of just 231 natural World Heritage sites in the world. These sites are considered to have outstanding universal value and deserve the utmost protection. To name just a few of the outstanding aspects of ACG, we offer the fact that ACG contains: 169,000 contiguous hectares of marine and terrestrial habitat; the largest remaining tropical dry forest in Mesoamerica; the most pristine Pacific waters between Mexico and Panama; and over 600,000 species. As it states on the UNESCO World Heritage website, ACG “... is globally important for the conservation of tropical biological diversity as one of the finest examples of a continuous and well-protected altitudinal transect in the Neotropics along a series of marine and terrestrial ecosystems. The enormous variation in environmental conditions favours a high diversity, with two thirds of all species described for Costa Rica occurring within the relatively compact area.” As a way to celebrate this milestone, ACG released a short video, which you can view here. We share in celebrating this achievement!