Taq Kasra
Tāq Kasrā (Arabic: طاق كسرى, romanized: ṭāq kisrā), also transcribed as Taq-i Kisra or Taq-e Kesra (Persian: طاق کسری, romanized: tâğe kasrâ) or Ayvān-e Kesrā (Persian: ایوان خسرو, romanized: Eivâne Xosrow, lit. 'Iwan of Khosrow') are the remains of a Sasanian-era Persian monument, dated to c. the 3rd to 6th centuries, which is sometimes called the Arch of Ctesiphon.