It began as a Roman redoubt, but its present style was devised in the 16th century.
The Romans never fully finished the redoubt and it lie in ruins until 13th century monks claimed it.
mnli hypothesis: The Romans never fully finished the redoubt and it lie in ruins until 13th century monks claimed it. premise: It began as a Roman redoubt, but its present style was devised in the 16th century.