five successive sets of walls
... that the city of Madrid has had five successive sets of walls, from the first built by the Moors in 860 to the ones built by Philip IV in 1625?
... that the city of Madrid has had <b id="mwAZY"><a href="./Walls_of_Madrid" id="mwAZc" rel="mw:WikiLink" title="Walls of Madrid">five successive sets of walls</a></b>, from the first built by the <a href="./Moors" id="mwAZg" rel="mw:WikiLink" title="Moors">Moors</a> in 860 to the ones built by <a href="./Philip_IV_of_Spain" id="mwAZk" rel="mw:WikiLink" title="Philip IV of Spain">Philip<span id="mwAZo" typeof="mw:Entity"> </span>IV</a> in 1625?