WArea de Conservación Guanacaste World Heritage SiteWBallena Marine National ParkWBarra Honda National ParkWCamaronal Wildlife RefugeWCeleste RiverWChira IslandWCipancí Wildlife RefugeWDiriá National ParkWGuanacaste Conservation AreaWGuanacaste National Park (Costa Rica)WGulf of NicoyaWHorizontes Experimental ForestWIguanita Wildlife RefugeWJunquillal Bay Wildlife RefugeWLake ArenalWLake CoteWLake Río CuartoWLas Baulas Marine National ParkWLomas de Barbudal Biological ReserveWMata Redonda Wildlife RefugeWNegritos Islands Biological ReserveWNicoya PeninsulaWOstional Mixed Wildlife RefugeWPalo Verde National ParkWGulf of PapagayoWPapagayo PeninsulaWPlaya Coyote, Costa RicaWRincón de la Vieja National ParkWRincón de la Vieja VolcanoWSanta Rosa National ParkWTempisque RiverWTenorio Volcano National ParkWZapandí Riverine Wetlands
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