Hagia Sophia was a Greek Orthodox Christian patriarchal church,
later an imperial mosque, and now a museum in Istanbul, Turkey.
It was constructed in 537 AD.
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Dr. Vijay Pithadia, FIETE, PhD, MBA Director, PhD Guided: 5, Author of 6 Books, Google Scholar Citations - 635, h-index - 8, i10-index-8, M: +91 9898422655 UGC/Scopus/Web of Science Publication: 31, Referred Publication: 67, Book Chapters: 12, Full Papers Published in Conference Proceedings: 21, Patent Published: 3, Invited Lectures and Chairmanship etc.: 44, Conference Organized: 4, AICTE faculty ID: 1-24647366683