The ziggurat was built by King Ur-Nammu, who dedicated it in honour of Nanna/Sîn in approximately the 21st century BCE (short chronology) during the Third Dynasty of Ur.
 The massive step pyramid measured 64 m (210 ft) in length, 45 m (148 ft) in width and over 30 m (98 ft) in height.
The height is speculative, as only the foundations of the Sumerian ziggurat have survived.

The ziggurat was a piece in a temple complex that served as an administrative center for the city, and which was a shrine of the moon god Nanna, the patron deity of Ur.

The construction of the ziggurat was finished in the 21st century BCE by King Shulgi, who, in order to win the allegiance of cities, proclaimed himself a god.
During his 48-year reign, the city of Ur grew to be the capital of a state controlling much of Mesopotamia.
Many ziggurats were made by stacking mud-bricks up and using mud to seal them together.
The ziggurat was built by King Ur-Nammu, who dedicated it in honour of Nanna/Sîn in approximately the 21st century BCE (short chronology) during the Third Dynasty of Ur.  The massive step pyramid measured 64 m (210 ft) in length, 45 m (148 ft) in width and over 30 m (98 ft) in height. The height is speculative, as only the foundations of the Sumerian ziggurat have survived.
The ziggurat was a piece in a temple complex that served as an administrative center for the city, and which was a shrine of the moon god Nanna, the patron deity of Ur.
The construction of the ziggurat was finished in the 21st century BCE by King Shulgi, who, in order to win the allegiance of cities, proclaimed himself a god. During his 48-year reign, the city of Ur grew to be the capital of a state controlling much of Mesopotamia. Many ziggurats were made by stacking mud-bricks up and using mud to seal them together.
Ziggurat of Ur