Around 2100 BC, King Ur-Nammu built the world's first known ziggurat at Ur in ancient Mesopotamia—a massive three-tiered mud-brick stepped temple honoring the moon god Nanna. It served as the spiritual center of Sumer's thriving city while he created history's earliest known legal code. #ZigguratOfUr | Archaeology Wonders

The Great Ziggurat of Ur is the only standing ziggurat in the world. It towers over the remains of the earliest civilization ever known — Sumer. Watch new episodes of Unearthed Sundays at 9p and stream on discovery . http://discoverypl.us/388k3GH #discoveryplus | Science Channel