Is arenal a city of Costa Rica?

No, Arenal is not a city. The name “Arenal” usually refers to the Arenal Volcano and the surrounding area in northern Costa Rica. The closest town is La Fortuna, which serves as the main hub for visitors exploring Arenal Volcano National Park, hot springs, hiking trails, and adventure activities. So while Arenal itself isn’t a city, it is one of the most popular destinations in Costa Rica for nature and adventure tourism.