Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Historic Areas of Istanbul' has mentioned 'Hagia Sophia' in the following places:
Occurrence Sentence Text Source
Istanbul xc4xb0stanbulMegacity Metropolitan municipalityClockwise from top: the Bosphorus Bridge connecting Europe and Asia; Maiden's Tower; a nostalgic tram on xc4xb0stiklal Avenue; Levent business district; Galata Tower; Ortakxc3xb6y Mosque in front of the Bosphorus Bridge; and Hagia Sophia.
[48][49] Numerous churches were built across the city, including Hagia Sophia which was built during the reign of Justinian the Great and remained the world's largest cathedral for a thousand years.
Originally a church, later a mosque, the 6th-century Hagia Sophia (532xe2x80x93537) by Byzantine emperor Justinian the Great was the largest cathedral in the world for nearly a thousand years, until the completion of the Seville Cathedral (1507) in Spain.
[56] Hagia Sophia was converted to a Catholic church in 1204.
Hours later, the sultan rode to the Hagia Sophia and summoned an imam to proclaim the Islamic creed, converting the grand cathedral into an imperial mosque due to the city's refusal to surrender peacefully.
Several landmarksxe2x80x94including Sultan Ahmed Mosque, the Hagia Sophia, Topkapxc4xb1 Palace, and Dolmabahxc3xa7e Palacexe2x80x94can be seen along their shores.
It is the Hagia Sophia, however, that fully conveys the period of Constantinople as a city without parallel in Christendom.
The Hagia Sophia, topped by a dome 31 meters (102xc2xa0ft) in diameter over a square space defined by four arches, is the pinnacle of the Byzantine architecture.
[152] The Hagia Sophia stood as the world's largest cathedral in the world until it was converted into a mosque in the 15th century.
The Sultan Ahmed Mosque (Blue Mosque), another landmark of the city, faces the Hagia Sophia at Sultanahmet Square (Hippodrome of Constantinople).
The distinctive and characteristic skyline of Istanbul was built up over many centuries and encompasses thexc2xa0 Hagiaxc2xa0 Sophia whose vast dome reflects the architectural and decorative expertise of the 6th century,xc2xa0 the 15th century Fatih complex and Topkapi Palace - that was continually extended until the 19th century, the Sxc3xbcleymaniye Mosque complex and Sehzade Mosque complex, works of the chief architect Sinan, reflecting the climax of Ottoman architecture in the 16th century, the 17th century Blue Mosque and the slender minarets of the New Mosque near the port completed in 1664.
These areas display architectural achievements of successive imperial periods also including the 17th century Blue Mosque, the Sokollu Mehmet Pasha Mosque, the 16th century xc5x9eehzade Mosque complex, the 15th century Topkapi Palace, the hippodrome of Constantine, the aqueduct of Valens, the Justinian churches of Hagia Sophia, St. Irene, Kxc3xbcxc3xa7xc3xbck Ayasofya Mosque (the former church of the Sts Sergius and Bacchus), the Pantocrator Monastery founded under John II Comnene by Empress Irene; the former Church of the Holy Saviour of Chora with its mosaics and paintings dating from the 14th and 15th centuries; and many other exceptional examples of various building types including baths, cisterns, and tombs.
Criterion (i): The Historic Areas of Istanbul include monuments recognised as unique architectural masterpieces of Byzantine and Ottoman periods such as Hagia Sophia, which was designed by Anthemios of Tralles and Isidoros of Miletus in 532-537 and the Suleymaniye Mosque complex designed by architect Sinan in 1550-1557.
Thus, the 6,650 meter terrestrial wall of Theodosius II with its second line of defence, created in 447, was one of the leading references for military architecture; Hagia Sophia became a model for an entire family of churches and later mosques, and the mosaics of the palaces and churches of Constantinople influenced both Eastern and Western art.
The impressive skyline of the Historic Peninsula with the Topkapxc4xb1 Palace, Hagia Sophia and Sxc3xbcleymaniye is preserved by planning measures.