Largest ever ziggurat

The largest ziggurat ever built was that of the Elamite King Untas, c.1250BC, known as the Ziggurat of Choga Zambil, 30km 18.6miles from Haft Tepe, Iran. The outer base was 105´105m 344´344ft and the fifth `box' 28´28m 92´92ft, nearly 50m 164ft above.