How to customize a single default taxonomy page? In Drupal, we have default taxonomy pages. These pages have the same view. We want to change the layout of one of those pages. Is it possible?
If you are using the standard issue taxonomy module to output your pages, eg:

www.yourhost.com/taxonomy/term/###  (or whatever its eventual alias is)


you can modify taxonomy-term.tpl.php to do almost anything you want.

In D7, it's provided for you and basically looks like this:

&lt;div id="taxonomy-term-&lt;?php print $term-&gt;tid; ?&gt;" class="&lt;?php print $classes; ?&gt;"&gt;

  &lt;?php if (!$page): ?&gt;
    &lt;h2&gt;&lt;a href="&lt;?php print $term_url; ?&gt;"&gt;&lt;?php print $term_name; ?&gt;&lt;/a&gt;&lt;/h2&gt;
  &lt;?php endif; ?&gt;

  &lt;div class="content"&gt;
    &lt;?php print render($content); ?&gt;
  &lt;/div&gt;

&lt;/div&gt;


The key variable to your question is $term and you could do something like this:

&lt;div id="taxonomy-term-&lt;?php print $term-&gt;tid; ?&gt;" class="&lt;?php print $classes; ?&gt;"&gt;

  &lt;?php if (!$page): ?&gt;
    &lt;h2&gt;&lt;a href="&lt;?php print $term_url; ?&gt;"&gt;&lt;?php print $term_name; ?&gt;&lt;/a&gt;&lt;/h2&gt;
  &lt;?php endif; ?&gt;

  &lt;div class="content"&gt;
    &lt;?php if ($term-&gt;tid==THE_TID_YOU_ARE_LOOKING_FOR): ?&gt;
       &lt;?php // do something different here ?&gt;
    &lt;?php else: ?&gt;
      &lt;?php print render($content); ?&gt;
    &lt;?php endif; ?&gt;
  &lt;/div&gt;

&lt;/div&gt;