Authorities in Turkey have sealed off a luxury spa set up by illegally modifying a 1,500-year-old cistern near Hagia Sophia ...
Commissioned by Emperor Justinian I, the Hagia Sophia was a marvel of engineering, featuring a vast dome that seemed to float above the central nave. It set a precedent for Byzantine architecture.
The monumental Hagia Sophia in Constantinople – now Istanbul – was originally constructed as a cathedral. Built in 537 by the emperor Justinian, it was at first without figural imagery.