Ctesiphon: Fallen city of Sassanid kings
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The third-century Persian monument Taq Kasra (also transcribed as Taq-i Kisra, Taq-e Kesra meaning Iwan of Khosrow) or Arch of Ctesiphon, is the world’s largest brick vault. It is located near the modern town of Salman Pak, near Baghdad in Iraq. It is t
