Is a Costa Rican national park in the central part of the country, forming the Arenal Conservation Area.

Is a Wildlife refuge, part of the Arenal Huetar Norte Conservation Area.

Is a lake which is situated in the northern highlands of Costa Rica. It is currently the largest lake in Costa Rica at 85-square-kilometers (33 sq mi). Its depth varies between 30 and 60 meters (100–200 feet) seasonally.