You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20170220115258" timestamp="2017-02-20T11:52:58Z" ns="0" title="Railcam DATA Quick Guide" />
        <page value="20170220180512" timestamp="2017-02-20T18:05:12Z" ns="0" title="Railcam DATA Searches and features" />
        <page value="20170220181536" timestamp="2017-02-20T18:15:36Z" ns="0" title="Railcam Open Rail" />
        <page value="20170222083556" timestamp="2017-02-22T08:35:56Z" ns="0" title="Cameras playback troubleshooting" />
        <page value="20170222112817" timestamp="2017-02-22T11:28:17Z" ns="0" title="Diagram troubleshooting" />
        <page value="20170224120646" timestamp="2017-02-24T12:06:46Z" ns="0" title="Contributing information to Railcam DATA" />
        <page value="20190725140241" timestamp="2019-07-25T14:02:41Z" ns="0" title="Want to host a camera?" />
        <page value="20210609094010" timestamp="2021-06-09T09:40:10Z" ns="0" title="Chatrooms" />
        <page value="20210628111117" timestamp="2021-06-28T11:11:17Z" ns="0" title="Alternative Players" />
        <page value="20210812113610" timestamp="2021-08-12T11:36:10Z" ns="0" title="Dealing with &#039;&#039;&#039;Video Error&#039;&#039;&#039;" />
      </results>
    </querypage>
  </query>
</api>