The Great Temple devoted to Huiztilopochtli and Tlaloc was approximately at its base. Construction of the first temple began sometime after 1325. It was rebuilt six times after that. The temple was destroyed by the Spanish in 1521. The modern-day archeological site lies just to the northeast of the Zocalo, or main plaza of Mexico City The site is part of the Historic Center of Mexico City, which was added to the UNESCO World Heritage List in 1987.