Chester city walls
... that the Chester city walls form the most complete circuit of Roman and medieval defensive town walls in Britain?
... that the <b id="mwEC0"><a href="./List_of_sections_of_Chester_city_walls_and_associated_structures" id="mwEC4" rel="mw:WikiLink" title="List of sections of Chester city walls and associated structures">Chester city walls</a></b> <i id="mwEC8">(section pictured)</i> form the most complete circuit of <a href="./Roman_Britain" id="mwEDA" rel="mw:WikiLink" title="Roman Britain">Roman</a> and <a href="./England_in_the_Middle_Ages" id="mwEDE" rel="mw:WikiLink" title="England in the Middle Ages">medieval</a> <a href="./Defensive_wall" id="mwEDI" rel="mw:WikiLink" title="Defensive wall">defensive town walls</a> in Britain?