Hadrianopolis, Turkey, has been the site of recent excavations (see post below). A beautiful mosaic has been recently discovered. It is believed to be part of a fourth-century AD reception hall.
https://www.aa.com.tr/en/turkiye/4th-century-reception-hall-with-rare-mosaics-unearthed-in-ancient-city-of-hadrianopolis-in-turkish-black-sea-region/3767738