Ciudad Esmeralda is an impressive natural canyon located between the cantons of San Carlos and Zarcero, in the province of Alajuela. Its geography combines rock formations carved by the river, dense tropical vegetation, and crystal-clear waterfalls that create an atmosphere of mystery and freshness. The variation of light between the canyon walls and the turquoise reflections of the water offer ideal visual conditions for film productions seeking an atmosphere of adventure, fantasy, or a deep connection with nature.