Jon Coulston, who has died of cancer aged 67, was a leading scholar on the iconography of Trajan’s column in Rome, one of the most detailed military monuments to survive from the Roman Empire.

Criterion (iv): The Frontiers of the Roman Empire – Dacia is a remarkable example of Roman military architecture and technological development. The property testifies to the versatility and ...

Archeological studies have established that Dacia, a Roman province that overlaps with modern-day Romania, was cut off from the rest of the empire around 260 A.D.