[el kas'tiʎo]), Spanish for the castle), also known as the Temple of Kukulcan, is a Mesoamerican step-pyramid that dominates the center of the Chichen Itza archaeological site in the Mexican state of Yucatan. Yucatán the building is more formally designated by archaeologists As Chichen Itza STRUCTURE. 5b18esearchers concluded that there must be an inner pyramid approximately 33 m (108 ft) wide, shaped similarly to the outer pyramid, with 9 steps and a height of 17 m (56 ft) up to the platform of the temple where the Chac Mool and the jaguar were found.