From the international Airport Juan Santamaría you follow the panamerican highway to the next exit "Alajuela - Atenas". At the stop sign of this exit turn left over the bridge and cross the main highway going towards Atenas. Then drive for about 5 minutes. At the corner where the famous restaurant "La Fiesta del Maíz" is located, turn left after about 900 meters (1 mile), and then at the t-junction turn right after about 400 meters (450 yards).