Parks

National Parks include:

Arenal Volcano, located in the Arenal Conservation Area
Ballena ("Whale"), located just south of Dominical, includes Punta Uvita, Playa Piñuela and Playa Ballena
Braulio Carrillo, which includes Barva Volcano, Bajo la Hondura and Cacho Negro Peak
Cahuita, includes Cahuita Point and Puerto Vargas
Chirripo / La Amistad - two separate parks which form the Amistad-Talamanca Regional Conservation Unit. La Amistad extends into Panama.
Cocos Island
Corcovado, Osa Peninsula, along with Piedras Blancas National Park near Golfito
Irazu Volcano
Juan Castro Blanco, Bajos del Toro, at the head of the valley of the Río Toro
Manuel Antonio, includes Playa Espadilla Sur, Playa Blanca, and Playa Puerto Escondido
Playa Grande Marine Turtle, within the Tamarindo National Wildlife Refuge
Poas Volcano
Palo Verde, includes the Río Tempisque in the Gulf of Nicoya. contiguous with Caballero Wildlife Refuge and Lomas Barbudal Biological Reserve, which with Barra Honda National Park and adjacent areas, form the Tempisque Megapark
Rincon de la Vieja
Santa Rosa covers much of the Santa Elena peninsula. part of the Guanacaste Conservation Area (GCA)--that incorporates Santa Rosa National Park, Rincón de la Vieja National Park, Bolaños Island Wildlife Refuge, the Junquillal Bay National Wildlife Refuge, and the Horizontes Experimental Station.
Tapanti, situated in the Orosi Valley, surrounded by the Macho River Forest Reserve
Tortuguero

National Reserves include:

Subcategories 9

Costa Rica's Natural Attractions Information on National Parks, Biological Reserves and Wildlife Refuges.
The National Parks of Costa Rica Site providing brief details on the National Parks of Costa Rica.
Costa Rica's National Parks and Reserves Detailed description of 16 National Parks and 10 National Reserves
Costa Rica National Parks Information, trail maps, facilities and driving directions for each of the 161 national parks and wildlife refuges.