The Pawnee generally settled close to the rivers and placed their lodges on the higher banks. They built earth lodges that by historical times tended to be oval in shape; at earlier stages, they were rectangular. They constructed the frame, made of 10–15 posts set some apart, which outlined the central room of the lodge. Lodge size varied based on the number of poles placed in the center of the structure. Most lodges had 4, 8, or 12 center-poles. A common feature in Pawnee lodges were four painted poles, which represented the four cardinal directions and the four major star gods (not to be confused with the Creator). A second outer ring of poles outlined the outer circumference of the lodge. Horizontal beams linked the posts together.