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="20131117043915" timestamp="2013-11-17T04:39:15Z" ns="0" title="Current events" />
        <page value="20131205065800" timestamp="2013-12-05T06:58:00Z" ns="0" title="Young Unity Expectations" />
        <page value="20140111095907" timestamp="2014-01-11T09:59:07Z" ns="0" title="Power Boy" />
        <page value="20140111193938" timestamp="2014-01-11T19:39:38Z" ns="0" title="HyperMUX" />
        <page value="20140111212800" timestamp="2014-01-11T21:28:00Z" ns="0" title="Ruby Weasel" />
        <page value="20140111220626" timestamp="2014-01-11T22:06:26Z" ns="0" title="New HyperMUX Character Page" />
        <page value="20140112054518" timestamp="2014-01-12T05:45:18Z" ns="0" title="Super Pets" />
        <page value="20140112101437" timestamp="2014-01-12T10:14:37Z" ns="0" title="Unity" />
        <page value="20140112191816" timestamp="2014-01-12T19:18:16Z" ns="0" title="Knick Alen" />
        <page value="20140116084533" timestamp="2014-01-16T08:45:33Z" ns="0" title="PreloadMMOChar" />
      </results>
    </querypage>
  </query>
</api>