Located about 31 miles (50 kilometers) north of Belize City, Altun Ha is divided into two main clusters, Plaza A and Plaza B, each with its own special attractions. Plaza A features the mysterious Temple of the Green Tomb, where jade, jewelry, flints, and other artifacts were found.
Plaza B is home to the biggest structure on the site, the Temple of Masonry Altar, which rises more than 60 feet (18 meters) above the plaza. Thought to be the main religious center of the civilization, the temple houses the famous head of Kinich Ahau: a 10-pound (5-kilogram) jade stone carved into the head of the Mayan sun god; this national treasure is depicted on the local currency. Guided tours are available from Belize City, and many combine a trip to the ruins with other nearby attractions and activities.