Hagia Sophia Church was erected at the in- tersection of cardo and decumanus in the middle of the city ca 500 AD.
See:
- Ayasofya - http://tayproject.org/TAYBizansMar.fm$Retrieve?YerlesmeNo=20038&html=bizansdetaile.html&layout=web
- Haluk Çetinkaya, Churches of Nicaea, in: Nis and Byzantium 2021, pp. 55 – 76