what is the style of arch found at the great mosque at cordoba
Mosque–Cathedral of Córdoba The building is most notable for its arcaded hypostyle hall, with 856 columns of jasper, onyx, marble, and granite. These were made from pieces of the Roman temple which had occupied the site previously, as well as other destroyed Roman buildings, such as the Mérida amphitheatre. The double arches were a new introduction to architecture, permitting higher ceilings than would otherwise be possible with relatively low columns. The double arches consist of a lower horseshoe arch and an upper semi-circular arch. The famous alternating red and white voussoirs of the arches were inspired by those in the Dome of the Rock.[31] and also resemble those of the Aachen Cathedral, which were built almost at the same time. Horseshoe arches were known in the Iberian Peninsula since late Antiquity, as can be seen on the 3rd-century "Estela de los Flavios", now in the arqueological museum of León. A centrally located honey-combed dome has blue tiles decorated with stars.
Hagia Sophia Hagia Sophia (/ˈhɑːɡiə soʊˈfiːə/; from the Greek Αγία Σοφία, pronounced [aˈʝia soˈfia], "Holy Wisdom"; Latin: Sancta Sophia or Sancta Sapientia; Turkish: Ayasofya) is the former Greek Orthodox Christian patriarchal cathedral, later an Ottoman imperial mosque and now a museum (Ayasofya Müzesi) in Istanbul, Turkey. Built in 537 AD at the beginning of the Middle Ages, it was famous in particular for its massive dome. It was the world's largest building and an engineering marvel of its time. It is considered the epitome of Byzantine architecture[1] and is said to have "changed the history of architecture".[2]