Ur

Ur was an ancient city in southern Mesopotamia, located near the original mouth of the Euphrates and Tigris rivers on the Persian Gulf and close to Eridu. Because of marine regression, the remains are now well inland in present-day Iraq, south of the Euphrates on its right bank , and named Tell el-Mukayyar, near the city of Nasiriyah south of Baghdad.

⁶Abram believed the LORD, and he credited it to him as righteousness. ⁷He also said to him, "I am the LORD, who brought you out of Ur of the Chaldeans to give you this land to take possession of it." ⁸But Abram said, "O Sovereign LORD, how can I know that I will gain possession of it?"
-Genesis 15:6-8

The site is marked by the ruins of a ziggurat (right), still largely intact, and by a settlement mound. The ziggurat is a temple of Nanna, the moon deity in Sumerian mythology. It has has two stages constructed from brick: in the lower stage the bricks are joined together with bitumen, in the upper stage they are joined with mortar. Ur at its height had around 30,000 residents.

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