There are many and amazing national parks in Guanacaste. Apart from privately held nature reserves, biological reserves and other type of environmental and habitat protection areas, the main Guanacaste national parks include Rincon de la Vieja Volcano and National Park, Santa Rosa National Park, Guanacaste National Park, the Guanacaste Conservation Area that goes far beyond the typical dry plains of Guanacaste`s lowlands over mountains tops at 2000 meters above sea level into the northern plains near San Juan River, influenced by the Caribbean weather, wet, humid, rainy and lush. Other important national parks in Guanacaste include Palo Verde National Park and Bird Sanctuary, Barra Honda National Park, Las Baulas Marine National Park, Bosque Diria National Park and Lomas Barbudal Biological Reserve.
Barra Honda has amazing caves and caverns, that visitors can discover and explore, Palo Verde is an amazing network of natural canals, mangrove forests, tropical dry forests and other habitats. It is a unique bird sanctuary. Lomas Barbudal is an insect and bee sanctuary, known worldwide by scientists. Santa Rosa National Park has amazing beaches, forests and the Casona de Santa Rosa. Rincon de la Vieja protects forests of dives kind, steaming geyser type mud and steam baths, rives, lagoons, waterfalls and unique scenery. Tenorio Volcano National Park protects forests, lagoons, rivers and the famous Rio Celeste River. Las Baulas is an important Marine National Park, Guanacaste Conservation area is the largest protected area in Costa Rica, including Santa Rosa, Rincon de la Vieja, Cacao and the Caribbean Section of Guanacaste National Park.