Arenal Volcano National Park

Arenal Volcano National Park is a Costa Rican national park in the central part of the country, forming the Arenal Tilaran Conservation Area. The park encompasses the Arenal Volcano, which "was" the most active in the country, which had previously been believed to be dormant until a major eruption in 1968. It neighbors Lake Arenal, which is the site of the country's largest hydroelectricity project, the Lake Arenal Dam.

The park also contains a second volcano, Chato, whose crater contains a lagoon. It is also called Cerro Chato as it has been inactive for around 3500 years–coinciding with the creation and growth of Arenal itself. In and around the park are various lodges and hotels, some with their own hot springs, and others focused on the wildlife of the area. Within the national park are the Museum of Volcanicity and a ranger station.