Create a panoramic image of the ancient city of Ur in its prime, around 2100-2000 BC. The city should be bustling with activity. In the center, include the famous Ziggurat of Ur, a massive step pyramid with a temple at the top, dedicated to the moon god Nanna. This structure should dominate the skyline, with its terraced levels and a grand staircase. Surrounding the Ziggurat, depict a variety of mud-brick residential houses, some simple and others more complex, indicating a stratified society. Include bustling marketplaces with merchants and artisans, showcasing the city's role as a trade hub. The streets should be well-defined, some wide and others narrow, filled with people and animals like donkeys and camels. Add a section of the city showing intricate canal systems, illustrating Ur's advanced irrigation techniques. The city walls should be visible in the distance, made of mud bricks, protecting the city. Ensure that the Euphrates River is visible, with boats and river activity, highlighting Ur's importance as a port city. The overall color palette should reflect the arid environment and the materials available at the time, with earthy tones dominating.  --ar 3:1