The Chichén Itza Ball Court, built around 850 AD, is the largest ball field in Mesoamerica, which includes Mexico and the countries of Cental America. The court measures 168 by 79 meters (551 by 230 ft), over twice the size of an American football field. The parallel walls are each 95 meters (312 ft) long and 8 meters (26 ft) high. The inverted hoops placed in the center of the walls are carved with into decorative feathers. The court is acoustically perfect. A whisper from one end can be heard clearly at the other end 79 m/ 500 ft away.