How old is the oldest building near you?

The Romans built the first walls around Canterbury, Kent in England between 270 and 290 AD. Very little of these Roman walls remain, but large sections survive of the medieval walls that replaced the Roman structure. The medieval walls surrounded the entire city of Canterbury and were pierced by eight gates, West Gate, North Gate, Quenin Gate, Burgate, Newingate, Riding Gate, Worth Gate, and London Gate. Of these, only West Gate remains.