As historical a city as London is, there are plenty of buildings and structures that date back centuries, if not thousands of years. While London had long been spotted with settlements, the first organized building came with the Romans after their invasion in 43 AD. The coming of the Christians in the Middle Ages led to the construction of several churches that see many worshippers each Sunday. Even more buildings that still exist today followed the Norman invasion in 1066 AD. So what are the ten oldest buildings and structures in the city? Have a look here.