Detail of helmet and plumes of a Roman cavalryman during the Hippika Gymnasia. The Hippika Gymnasia were ritual displays or tournaments performed by the cavalry of the Roman Empire to display their skill and expertise.
Hadian's wall, Scotland- northmost point of the wall. Under Hadrian's rule, the empire spread to its greatest size. Hadrian's Wall in England, at the border of Scotland, marked the northern boundary of the Roman Empire.
Portrait head of the Roman Emperor Constantine I - In 330 A., the first Christian ruler of the Roman empire, Constantine the Great (r. transferred the ancient imperial capital from Rome to the city of 'Byzantion'.