Ishtar Gate

Reconstruction; originally from Babylon (present-day Babil, Iraq). c. 575 BCE. Glazed brick, height of gate originally 40′ (12.2 meters) with towers rising 100′ (30.5 meters). Vorderasiatisches Museum, Staatliche Museen zu Berlin, Preussischer Kulturbesitz.

Recommended REading

Khan Academy Video and Article

Ishtar Gate and Processional Way  

Neo-Babylonian  

BBC Article

The Great Gate of Ishtar: A Door to Wonder

Additional Material

Ancient Origins Article

The Magnificent Ishtar Gates of Babylon

Live Science Article

Ishtar Gate: Grand Entrance to Babylon