walled city has the shape of an irregular pentagon, with an initial area of 18 hectares; after 271 it was extended easterly with a 10 hectare addition. In 1948, the mosaic known popularly as "The Achaeans" (3rd century AD) was discovered. It is currently on display, along with many other of the site's artifacts, at the Pleven Regional Historical Museum. Other artifacts from the site, such as a statue of the goddess Fortuna, are on view at the National Archaeological Museum in Sofia. Archaeological surveys of the eastern extension of Oescus II indicate houses from the Principate period, some of which were quite massive and were decorated with mosaics that could be dated to the time of Septimius Severus. The ruins indicate the wealth of the city in the Antonine and Severan dynasties. There are a main gate, administrative buildings, a civil basilica, three public baths (thermae), wells, a perfectly preserved road, pagan temples, a necropolis, defensive walls, workshops, and a forum. There also exist ruins of Constantines's Bridge, but they can be seen only from the northern bank of the Danube. Archaeology is continuing at the site. In 2020 the Aula regia, or great hall, was found to have been exquisitely and elaborately decorated with 14 types of rare multicloured marble. Dating from the 4th century, its date and quality indicate that it may have been built for Constantine's visit to officially open the bridge in 328. Honours Oescus Island in Antarctica is named after Oescus. Gallery See also Dacia Dacian davae List of ancient cities in Thrace and Dacia Moesia Roman Dacia References Ancient Notitia Dignitatum cca 395–413 Modern Further reading External links 3D Laser scanning and rendered movie Moesia Inferior Dacian towns Roman towns and cities in Bulgaria Former populated places in Bulgaria History of Eastern Romance people Coloniae (Roman)