A recent analysis of the Roman road network demonstrated that Ankara and Byzantium (modern Istanbul), located at the crossroads of Europe and the Middle East, played a more significant role in this network than the imperial capital itself. The study also showed that migration flows in this region are not significantly different from modern times: modern major highways follow the same routes as the main Roman roads once did.
Furthermore, limestone accumulated on the walls of a thousand-year-old aqueduct in Nîmes, France, accidentally recorded the history of water consumption in Rome. The layers of sedimentary rock indicate that the city's water supply was interrupted around 270 AD due to a pandemic known as the Cyprian Plague. However, irrigation in rural areas continued for another 140 years after that.
Archaeologists discovered a complex of heated pools and saunas inside the tower of the Vrelol-Sharkamen palace in Serbia. This complex was used by the Roman Emperor Maximinus Daia in the 4th century AD. It included a room with a furnace designed to heat both the rooms and the water. A notable feature is the circular layout, adapted to the tower, which differs from the typical sequence of rooms in Roman baths.