Chichen Itza Temples

The Chichen Itza Temples were a set of First Civilization temples located beneath the Mayan city of Chichen Itza, in the Yucatán Peninsula in Mexico. The two temples each housed one half of a Prophecy Disk.

In the 1750s, the Templars discovered the existence of First Civilization ruins and set up a working colony in Chichen Itza. In 1769 and 1772, the Assassin Aveline de Grandpré visited Chichen Itza and discovered the two temples, and upon solving the puzzles, obtained the halves of the Prophecy Disk.

Reference

 * Assassin's Creed III: Liberation