Mysteria
Verified33.0936° N · 44.5808° E · 35 m

Ctesiphon (Taq Kasra)

Al-Mada'in · Taq-e Kesra · Tisafun

Parthian to Early Islamic (c.120 BCE–800 CE; Sassanian vault 540 CE under Khosrow I)·Parthian / Sassanian (Persian) / Byzantine influence·🇮🇶 Baghdad Governorate, Iraq

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About

About Ctesiphon (Taq Kasra)

Sassanian imperial capital complex (224–651 CE) on Tigris, Ctesiphon comprised Seleucia-Tisfun-Mahouza conurbation. Taq Kasra – remains of Sassanian palace iwan: greatest brick single-span vault in world 25.5 m wide, 37 m high, depth 43 m – at Ctesiphon arch. Bare brick Parthian-Sassanid technique. Byzantine Emperor Heraclius sacked 628, Arabs 637.

Why it mattersGreatest brick vault in antiquity; Sassanian palace paradigm

Open questions

Mysteries & theories

Mysteries

  1. 01Structural engineering enabling 25 m unbuttressed brick vault without centering
  2. 02Exact columned facade reconstruction vs current brick arch interpretation

Theories

  1. 01Vault built without centering using leaning bricks and fast-setting gypsum mortar (Reuther)
  2. 02Taq Kasra façade once covered with stucco and mosaic

Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.

History

How it came to be

Built
City Seleucia-adjacent 120 BCE; palace vault under Khosrow I c.540 CE
Period
Parthian to Early Islamic (c.120 BCE–800 CE; Sassanian vault 540 CE under Khosrow I)
Culture
Parthian / Sassanian (Persian) / Byzantine influence
Purpose
Sassanian imperial palace and administrative capital of Eranshahr
Excavation
Partially excavated

  1. City Seleucia-adjacent 120 BCE; palace vault under Khosrow I c.540 CE

    Initial construction

  2. c. 1486 CE

    Rediscovery

On the ground

Structures & features

33.0936° N · 44.5808° E · 35 m · 3 mapped features

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