The traditional Bhutanese houses are made out of mud, bamboo, and wood. The doors and windows of Bhutanese houses are decorated with animal, religious, or floral designs. The houses here are usually of three stories, in the ground floor cattle and other animals of the house reside, the second floor is for storage, and the third floor is the living quarters which often has a shrine. Hay, dry vegetables and meat are stored in the open-air area between the third floor and the roof. And the most important feature of Bhutanese houses is a prayer flag placed in the center of the roof.