Horseshoe arch - wikipedia Horseshoe arch Santa Eulalia de Bóveda, Lugo. - Façade ( 2nd Century ) Horseshoe arch Church of San Juan de Baños in Spain, Visigothic architecture 7th century. Horseshoe arches inside the Mosque of Uqba, in Kairouan, Tunisia The horseshoe arch ( Spanish : arco de herradura / ˈarko de eraˈduɾa / ), also called the Moorish arch and the keyhole arch, is the emblematic arch of Moorish architecture. Horseshoe arches can take rounded, pointed or lobed form. Horseshoe arches are known from pre-Islamic Syria, where the form was used in the fourth century CE in the Baptistery of Mar Ya'qub ( St. Jacob ) at Nisibin. However, it was in Spain and North Africa ( where it went from Spain ) that horseshoe arches developed their characteristic form. Prior to the Muslim invasion of Spain, the Visigoths used them as one of their main architectural features, which may come from at least the Roman period. Some tombstones from that period have been found in the north of Spain with horseshoe arches in them, with speculation about a pre-Roman local Celtic tradition. Also, the arch of the Church of Santa Eulalia de Boveda -- part of a previous Roman temple -- in Lugo, points in that direction. The Visigothic form was adopted and developed by the Umayyads, who accentuated the curvature of the horseshoe and added the alternating colours to accentuate the effect of its shape. This can be seen at a large scale in their major work, the Great Mosque of Córdoba. This style of horseshoe arch then spread all over the Caliphate and adjacent areas, and was adopted by the successor Muslim emirates of the peninsula, the taifas, as well as by the Almoravid dynasty, Almohad dynasty and the Nasrid Kingdom of Granada, although also lobed, round, pointed and multifoil arches were also used at that time. The Mozarabs also adopted this style of arch into their architecture and illuminated manuscripts. Horseshoe arches were also used in the Mosque of Uqba, in Kairouan and, in a slightly pointed form, in the Mosque of Muhammad ibn Khairun, Tunisia. Mudéjar style, developed from the 12th to the 17th centuries, continued the tradition of horseshoe arches in the Iberian Peninsula which had been started in the 7th century by the Visigoths. In addition to their use across the Islamic world, horseshoe arches became popular in Western countries at the time of the Moorish Revival. They were widely used in Moorish revival synagogues. Horseshoe arches are also a feature of Indo - Saracenic architecture, a style associated with the British Raj. References Wikimedia Commons has media related to Horseshoe arches. Jump up ^ Andrew Petersen : `` Dictionary of Islamic Architecture '', Routledge, 1999, ISBN 0 - 415 - 21332 - 0, p. 24 Jump up ^ http://www.soitu.es/soitu/2009/01/30/info/1233300020_674803.html ^ Jump up to : `` Archived copy ''. Archived from the original on 2011 - 05 - 25. Retrieved 2008 - 10 - 30. 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Question: horse shoe arches were an important architectural feature of
Answer: Moorish architecture