About 6km south of Alajuela are the Ojo de Agua springs, a picturesque working-class resort that's packed on weekends with folks from San José and Alajuela.

Approximately 20,000L of water gush out from the spring each minute, filling swimming pools and an artificial boating lake before being piped down to Puntarenas, for which the springs are a major supply of water. There are also snack stands, game courts and a small gymnasium. From San José, drivers can take the San Antonio de Belén exit off the Interamericana; Ojo de Agua is just past San Antonio.