List of circular cities

Several ancient cities of Mesopotamia and Persia are known to have had a circular plan.

The Round City of Baghdad, reconstructed by Guy Le Strange (1900)
Aerial photo of the modern town of Firuzabad and the ancient circular city of Gor nearby. Greenery seen from above with segmentation due to infrastructure visible; a large circular segment is prominently featured.
Aerial photo of the modern town of Firuzabad and the ancient circular city of Gor nearby