Ṭāq Kisrā

It is known as the Ṭāq Kisrā and is notable for its great barrel vault in baked brick, a typically Sāsānian architectonic device. Many Sāsānian buildings can also be seen in Fārs, where the characteristic construction is of limestone blocks embedded in strong mortar. The most important of these are…

…a gigantic vaulted hall, the Ṭāq Kisrā, which is traditionally regarded as the palace of the Sāsānian king Khosrow I (reigned 531–579 ce), although Shāpūr I (reigned 241–272 ce) also undertook work on the site. The hall has one of the largest single-span brick arches in the world.