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Chartaq (Persian: چارطاق), chahartaq (چهارطاق), chartaqi (چارطاقی), or chahartaqi (چهارطاقی), literally meaning "having four arches", is an architectural unit consisted of four barrel vaults and a dome.
Chartaqi was a prominent element in Iranian architecture, having various functions and used in both secular and religious contexts for 1,500 years, with the first instance apparently being developed in the Sasanian city of Gor (Firuzabad) in 210s AD by King Ardashir I. The biggest instance of chahartaq is that of the so-called Palace of Shapur I at Bishapur, also in Pars. Many pre-Islamic chahartaqs have survived, but they are usually just the sole surviving structure of a much bigger complex. The chahartaq structure was adopted in Islamic architecture.
A related concept is čahārqāpū (چهارقاپو).
Baze Hoor fire temple, Arsacid period
Chahartaqi of the Zahhak Castle, Arsacid period
Chahartaqi of Kheirabad, Sassanian period
One of the Barid Shahi tombs, India
Saint Gregory the Illuminator Cathedral, Yerevan, Armenia
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- Also transliterated with gh instead of q.
- Dietrich Huff, "ČAHĀRṬĀQ", Encyclopaedia Iranica, December 15, 1990
- "بنیادفرهنگی هنری رودکی". Bonyadroudaki.com. Retrieved 20 April 2018.
- "Freedom Tower, the gateway to Iranian civilization and art". Chidaneh.com. Retrieved 28 January 2019.