Thisarchitectural style includes designs from theSeleucid (310–140 BCE),Parthian (247 BCE – 224 CE), andSassanid (224–651 CE) eras, reaching its apex of development in the Sassanid period.
TheParthi style of architecture appeared afterAlexander the Great's conquest of theAchaemenid Empire in the 3rd century BCE, and historically includes the Sassanid, Parthian, and post Islamic eras, up to the 9th–10th centuries.[2] The remains of the architectural style of this period are not abundant, and although much was borrowed and incorporated fromGreek designs and methods, architects and builders of this age employed many innovative concepts of their own as well.[3]