English: In its size and intricate stonework, the Governor's Palace rivals the Magician's Pyramid as the masterpiece of Uxmal. It's an imposing three-level edifice with a 97 m. long mosaic facade, built in the 9th and 10th centuries.

There are 103 stone masks of Chac across the facade. They end at the corners, where there are columns of masks. In the open plaza in front of the Palace is the Jaguar Throne, carved like a two-headed jaguar, which the Mayas associated with chiefs and kings.

The Governor's Palace may have been the administrative center of the Xiú principality, which included the region around Uxmal. The Governor's Palace probably had astrological significance as well. For years, scholars pondered why this building was constructed slightly turned from adjacent buildings. Recently scholars of archaeoastronomy (a relatively new science that studies the placement of archaeological sites in relation to the stars) discovered that the central doorway, which is larger than the others, is in perfect alignment with Venus.