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>
    <allredirects garcontinue="Beaumont-Pankow_international|16599" />
  </query-continue>
  <query>
    <pages>
      <page pageid="2862" ns="0" title="BCS" />
      <page pageid="3181" ns="0" title="BS" />
      <page pageid="3246" ns="0" title="09" />
      <page pageid="5851" ns="0" title="Obama Avenue" />
      <page pageid="6070" ns="0" title="La Baie de Kygaïa" />
      <page pageid="11420" ns="0" title="Cuarto politico" />
      <page pageid="16053" ns="0" title="Basse-Génésie" />
      <page pageid="18574" ns="0" title="Banque Simlandaise d&#039;Investissement" />
      <page pageid="25006" ns="0" title="Bassin Minier Charbonnier du Grand Nord" />
      <page pageid="30631" ns="0" title="BGP" />
    </pages>
  </query>
</api>