The architectural design of Chavín de Huántar changed over time as an old temple development was added to with a new temple. Changes were more complex than in one stage of renovation. Smaller renovations happened consistently over the Chavín horizon, ending by about 500 BCE, when the new temple was completed. With the simpler design of the old temple, Chavín de Huántar followed the U-shaped ceremonial center design accompanied by a sunken circular plaza that was typical of many coastal settlements in the Early Horizon period.