Bridge tower
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bridge tower</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for pylon that I've seen before include "current supporter" , "Steel structure carrying cables" , "It marks turning point in a race" , "Power cable supporter" , "it may mark a turning point" .)