Parthian architecture(400 B.C.–200 A.D.)
The architecture developed while under Parthian rule in Iran and western Mesopotamia, combining Classical with indigenous features.
An architectural style developed under Parthian domination (3rd cent. B.C. to 3rd cent. A.D.) in western Iran and Mesopotamia, combining classical with autochthonous features. Its major achievement is the monumental iwan covered by a barrel vault in stone or brick.