In 1920, British soldiers digging trenches near the Euphrates River came across ancient wall paintings. In the sands of eastern Syria, they uncovered the remains of the ancient town of Dura-Europos. Located on the Euphrates River, the long-buried settlement was ruled successively by the Macedonians, Parthians, and Romans until its destruction in A.D. 256. Today, the site is known for its buildings, including the world's oldest church, one of the earliest synagogues ever found, and numerous Greco-Roman temples. Covering about 180 acres, Dura-Europos was founded around 300 B.C... Dura's location was ideal because it was both defensible and near a...