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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="20120622192417" timestamp="2012-06-22T19:24:17Z" ns="0" title="Federated state/territorial/provincial government" />
        <page value="20120622193008" timestamp="2012-06-22T19:30:08Z" ns="0" title="Values and Norms" />
        <page value="20120622193031" timestamp="2012-06-22T19:30:31Z" ns="0" title="Water Quantity" />
        <page value="20120622193119" timestamp="2012-06-22T19:31:19Z" ns="0" title="Governance" />
        <page value="20120622193425" timestamp="2012-06-22T19:34:25Z" ns="0" title="Ecosystems" />
        <page value="20120726205137" timestamp="2012-07-26T20:51:37Z" ns="0" title="Ilisu Dam Project, Turkey" />
        <page value="20120803160302" timestamp="2012-08-03T16:03:02Z" ns="0" title="South-North Water Transfer Project" />
        <page value="20120807180931" timestamp="2012-08-07T18:09:31Z" ns="0" title="Convention on Cooperation for the Protection and Sustainable Use of the Danube" />
        <page value="20120807202449" timestamp="2012-08-07T20:24:49Z" ns="0" title="Non-legislative governmental agency" />
        <page value="20120807202930" timestamp="2012-08-07T20:29:30Z" ns="0" title="Sovereign state/national/federal government" />
      </results>
    </querypage>
  </query>
</api>