For centuries, the royal tombs of Ur in modern-day Iraq, known in the Bible as the home of the patriarch Abraham, lay concealed. In the 1920s an excavation by The British Museum and the University of Pennsylvania Museum revealed troves of Sumerian treasures dating back to 2600 B.C. The Royal Tombs of Ur: Ancient Treasures from Modern Iraq featured more than 400 rare and exquisite Sumerian artifacts from the excavation of this famed Mesopotamian city.