<Location> Roman Agora, Athens, Attika, Greece
The area of the Roman Agora has been always inhabited from the Antiquity to the Byzantine and the Ottoman period, and we can find traces of every epoque. Fetiye Mosque in the Roman Agora is said to be originally a church and there are several Byzantine architectural elements around it. Here are some exemples.
The marble in this picture bears a refined relief of a gate with a cross.
And some others....