The City Wall surrounding London was first constructed by the Romans circa AD 200 and encompassed an area of approximately one square mile.
Although a number of lengths of wall can still be seen, this section, which formed part of the eastern defences of London, is the largest surviving section of original construction. Some reconstruction did take place in medieval times, although the original red Roman bricks and masonry amalgam used to bind them together can easily be recognised by the bands of tiles which survive here up to the original height.
Even the medieval rebuilding work contains pieces of Roman tile re-used from the original wall, probably when the section to the south was demolished to allow for the expansion of the Tower of London in the late 13th century.
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