Altun Ha Mayan Ruin Is the Mayan Ruin which the temple of the “Green Tomb.” Founded. They also found a solid jade head weighing almost 10 pounds and standing 6 inches in height. This treasure is the largest jade carving found at any Mayan Ruin, and it discovered in the temple of the “Sun God,” which is the tallest building, standing 54 feet from the plaza floor. On this fully guided tour around historic Belize City, you will see many places of interest, including the ancient swing bridge over Haulover Creek, which is turned open by human resources. You’ll also visit the oldest Anglican cathedral in Central America, St. John’s Cathedral built from bricks used as ballast in sailing ships of old. Directly across the street, you, will visit Government House, once home to the colonial Governors and now a museum.