Richborough Roman Fort and Amphitheatre, Kent
The arch at Richborough would have stood 25 metres high and would have dominated the busy port town. Large quantities of stone from the Imperial quarries at Carrera in Italy have been found on the site.
This indicates that the arch was faced in ornate and expensive white marble cladding. It would also have been covered in sculptures and inscriptions.
As time went on the south and east coast of Britain was increasingly harassed by Saxon and Frankish raiders.
Around AD 273 the boomtown of Richborough was replaced by a heavily defended fort, even the monumental arch, which had stood for almost 200 years, was demolished and reused in the huge walls that surrounded the fort.
Kathryn Bedford, Andrew Roberts, Matt Thompson, Rose Arkle