Guanacaste Province in the context of Rincón de la Vieja Volcano

Rincón de la Vieja is an active andesitic complex volcano in north-western Costa Rica, about 23 km (14 mi) from Liberia, in the province of Guanacaste.

Puntarenas (Spanish pronunciation: [puntaˈɾenas]) is a province of Costa Rica. It is located in the western part of the country, covering most of Costa Rica's Pacific Ocean coast, and it is the largest province in Costa Rica. Clockwise from the northwest, it borders on the provinces Guanacaste, Alajuela, San José and Limón, and the neighbouring country of Panama.

Liberia (Spanish pronunciation: [li.ˈβe.ɾja]) is a district and the largest city in the Guanacaste Province of Costa Rica, 215 kilometres (134 mi) northwest of the national capital, San José. Part of the Liberia canton, it is a major center of the country's tourism industry.

Liberia has been nicknamed la ciudad blanca (the white city) due to the white gravel that was once used to make the city's roads and the whitewashed colonial houses that used to make up a large part of the city. It had a population of 56,899 in 2013.

Alajuela (Spanish pronunciation: [alaˈxwela]) is a province of Costa Rica. It is located in the north-central part of the country, bordering Nicaragua to the north. It also borders the provinces of Heredia to the east, San José to the south, Puntarenas to the southwest and Guanacaste to the west. As of 2011, the province had a population of 885,571. Alajuela is composed of 16 cantons, which are divided into 111 districts. It covers an area of 9,757.53 square kilometers.

The provincial capital is Alajuela. Other large cities include Quesada, Aguas Zarcas, Naranjo, Zarcero, Orotina, Sarchí Norte, Upala, San Ramón, Grecia and Los Chiles.