Sagada proper is composed of two named territorial divisions, which are subdivided into a series of wards ( dapay ) and correspond to the Bontok ato (compact villages divided into wards). Houses are two or three stories high, constructed of wood, each with a high thatched roof and an enclosed area underneath. The low boxlike room at ground level is used for sleeping, cooking, and eating, whereas the upper level or "granary" is used primarily for the storage of food, wood, jars of rice wine, and other possessions. Surrounding each building is a rectangular field where sweet potatoes are grown, and also nearby are pens in which villagers keep pigs. The compact villages of from 300 to 2,000 persons are located near streams and are surrounded by terraced rice fields.