sentences:  The new church lay at the border between the First and Third "Regio" of the City, in an irregular area between the Palace of Hormisdas (the house of Justinian before his accession to the throne) and the Church of the Saints Peter and Paul.Back then, the two churches shared the same narthex, atrium and propylaea.The new church became the centre of the complex, and part still survives today, towards the south of the northern wall of one of the two other edifices.