Sassanian architecture

Sasanian architecture refers to the Persian architectural style that reached a peak in its development during the Sasanian era. In many ways the Sasanian Empire period (224-651 CE) witnessed the highest achievement of Persian civilization, and constituted the last great pre-Islamic Persian Empire before the Muslim conquest. In fact part of Sasanian architecture was adopted by Muslims and became part of Islamic architecture.

The Sasanian dynasty, like the Achaemenid Empire, originated in the province of Persis (Fars). They saw themselves as successors to the Achaemenians, after the Hellenistic and Parthian dynasty interlude, and perceived it as their role to restore the greatness of Persia.

In reviving the glories of the Achaemenian past, the Sasanians were no mere imitators. The art of this period reveals an astonishing virility. In certain respects it anticipates features later developed during the Islamic period. The conquest of Persia by Alexander II had inaugurated the spread of Hellenistic art into Western Asia; but if the East accepted the outward form of this art, it never really assimilated its spirit. Already in the Parthian period Hellenistic art was being interpreted freely by the peoples of the Near East and throughout the Sasanian period there was a continuing process of reaction against it. Sasanian art revived forms and traditions native to Persia; and in the Islamic period these reached the shores of the Mediterranean.

The splendour in which the Sasanian monarchs lived is well illustrated by their surviving palaces, such as those at Firouzabad and Bishapur in Fars, and the capital city of Ctesiphon in modern Iraq. In addition to local traditions, Parthian dynastic architecture must have been responsible for a great many of the Sasanian architectural characteristics. All are characterised by the barrel-vaulted iwans introduced in the Parthian period, but now they reached massive proportions, particularly at Ctesiphon. The arch of the great vaulted hall at Ctesiphon attributed to the reign of Shapur I (241-272) has a span of more than 80 ft, and reaches a height of 118 ft. from the ground. This magnificent structure fascinated architects in the centuries that followed and has always been considered as one of the most important pieces of Persian architecture. Many of the palaces contain an inner audience hall which consists, as at Firuzabad, of a chamber surmounted by a dome. The Persians solved the problem of constructing a circular dome on a square building by the squinch. This is an arch built across each corner of the square, thereby converting it into an octagon on which it is simple to place the dome. The dome chamber in the palace of Firouzabad is the earliest surviving example of the use of the squinch and so there is good reason for regarding Persia as its place of invention.

...
Wikipedia