Sassanid Towns, Villages and Mobility

The Sasanian Empire (224–651 CE) included royal cities, district towns, farming villages and mobile pastoral communities. Their relationships depended on local water, land and political needs. A royal foundation could organize a region and its taxes; an irrigation network could link fields, mills and a town; and a frontier wall could redirect movement across a plain. The patterns differed between Mesopotamia, the Iranian plateau and the northeastern frontier. Across the plateau, geography and the distribution of peoples and languages shaped where settlements developed and how they connected to towns.

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Royal foundations and planned cities

Sasanian kings founded cities or gave older towns new royal names as they extended direct authority into surrounding districts. These foundations were more than places to house a court. A royal city could anchor an administrative district and connect farms, crafts, mines and trade to the crown. Ardashir I’s Gor, later called Firuzabad, shows how closely a city’s plan could be tied to its landscape.

Gor stood in a defensible plain in Fars, in southwestern Iran. Its circular wall enclosed a city about 1.95 kilometers across, divided into twenty sectors by radial and concentric streets. Four principal gates aligned with the city’s axes. Beyond the wall, the same geometry continued into the plain through traces of canals, paths, walls and field boundaries. The planned landscape extended as far as ten kilometers from the central tower. The city therefore organized not only streets and official space inside its walls, but also a wider area of cultivation, water channels and access routes.

Bishapur, founded by Shapur I in the third century, used a different plan. Its rectangular street grid made it a distinct royal center in Fars. During the Sasanian period it served as the administrative center of one of the province’s five districts. A bilingual inscription at its central intersection records a royal visit, placing a public monument at the point where the city’s main streets met. Gor’s circular sectors and Bishapur’s grid show that royal planning took different forms rather than following a single imperial design.

Ctesiphon: a capital of several cities

The Sasanian capital usually called Ctesiphon was itself a group of settlements. It developed into a metropolis of cities and suburbs along both banks of the Tigris in central Iraq. Ardashir I added Weh-Ardashir around 230. Another district, New Ctesiphon, centered on the royal palace known as the Ayvan-e Kesra. The name al-Mada’in, “the Cities,” reflected this composite urban landscape.

Ctesiphon joined political authority to the resources of a densely settled agricultural province. The Tigris, its tributaries and an extensive network of waterways supported fertile land and many towns. The capital served as a royal residence and administrative center, while its inhabitants included Arameans, Syrians and Arabs, many of them Christian or Jewish. The Jewish exilarch, the leading authority in Babylonia’s Jewish community, and the head of the Church of the East also resided there. The ruling Persian Zoroastrian elite was a minority among the population of the surrounding area.

The metropolis changed as the river changed course. Around the middle of the fifth century, the Tigris shifted and divided Weh-Ardashir, contributing to serious flooding. The town declined during the sixth century, while other districts, including the palace area of New Ctesiphon, remained inhabited. This change shows how a river could reshape where people lived within a capital, even as the court and administration continued to use the broader urban region.

Villages, irrigation and town supplies

In Khuzestan, southwestern Iran, the town of Gondeshapur depended on a water system serving both the settlement and surrounding fields. Archaeological survey mapped an extensive network that brought water from the Dez River. A canal entered a stream at the city’s northwest edge, passed through a tunnel, and resurfaced beside a mill. From there, branches carried water through the town and into cultivated land.

Gondeshapur was one of four major cities in Khuzestan. Irrigation supported agricultural products such as rice and sugar, while the province also had a valuable textile industry. These goods connected the countryside to town workshops and markets, and some agricultural products moved beyond the region. The town was an administrative center, but its activity relied on water infrastructure and production outside its walls.

Across the empire, intensive agriculture depended on canals, qanats, wells and dams. A qanat was an underground channel that carried groundwater by gravity toward fields and settlements. Sasanian legal evidence names canals, qanats and mills as property, showing that control of water infrastructure could itself carry economic value alongside land and crops.

A frontier of towns, forts and herding

The Gorgan Plain in northeastern Iran shows another relationship between settlement and landscape. The Gorgan River divided a well-watered agricultural zone in the south from a drier steppe to the north. By the fifth or sixth century, the Sasanians had built a defensive system that included the Gorgan Wall, forts, canals and other large waterworks; it remained in use into the seventh century. The wall ran for roughly 175 kilometers across the plain. Its controlled gates could channel trade and movement between the settled south and communities farther north.

The plain also contained urban settlements. Dasht Qal’eh, about ten kilometers southeast of modern Gonbad-e Kavus, was a Sasanian foundation covering roughly three square kilometers within walls about 6.5 kilometers long. It partly overlaid older settlement mounds. Aerial and geophysical surveys identified residential quarters, brick-pillar avenues and a fire-temple complex. The southern agricultural zone and the northern steppe formed different parts of one frontier system, joined by towns, forts, canals and crossing points.

Herding also continued within this landscape. Animal remains from mid- to late Sasanian sites show the use of several herd animals, while landscape studies identify mobile pastoralism as one part of subsistence on the plain. Forts and controlled crossings channeled movement across the fortified line, while nearby settlements and herd-animal remains show that military infrastructure and husbandry occupied the same frontier landscape.

Coerced resettlement and changing communities

Rulers also moved people by force. Shapur I’s inscription at Naqsh-e Rostam records that he settled captives from Roman lands in Persis, Parthia, Khuzestan and Asoristan, or Iraq, on estates held by the king and his predecessors. Later, after Khosrow I captured Antioch in 540, residents from Antioch and other cities were reportedly taken to Wēh Antiōk Ḵosrow, also called Rūmagān, a new city near Ctesiphon. The account names Barāz, a Christian from Gondeshapur, as its governor and says the royal treasury supplied food; it also describes baths, racetracks and musical performances for the residents. The city’s provisioning and public amenities were organized by the crown.