All videos for Roman Emperors route. The Roman Emperors Route and Danube Wine Route are a series of archaeological sites and vineyards that tell the story of the expansion and defence of the Roman Empire on its northern Danube frontier. The geographical coverage of the Route themes encompasses a central axis along the Danube Corridor which is anchored in the west by the Adriatic coast and in the east by the Black Sea and delta of the Danube.