Etemenanki

He describes the city's walls, gates, and temples, including a "temple of Zeus Belus" (likely referring to the god Marduk, who was associated with the ziggurat Etemenanki).

He mentions the city's extensive construction projects but does not specifically name or describe the Etemenanki.

This structure is the Etemenanki, a massive ziggurat dedicated to the god Marduk.

Etemenanki means "Temple of the Foundation of Heaven and Earth" in Sumerian.

Etemenanki is thought to have been about 91 meters tall, making it a dominant feature of the Babylonian skyline.

The temple complex included the ziggurat Etemenanki, which was considered the earthly residence of Marduk.

Significance: Etemenanki was the great ziggurat of Babylon, often identified with the biblical Tower of Babel.