Steaming thermal pools at 2,600 meters, tucked away in the cloud forest on the slopes of the Zunil volcano. You soak in hot sulfurous water (~40°C) while the mist drifts down through the trees — among the most relaxing things Guatemala has to offer. 8 km from Zunil, in the highlands of Quetzaltenango. Bring warm clothes for the contrast when you get out.