Wikimedia Commons has media related to Wikipedia portals.

This category contains the top level portal categories and portal pages; portals are sorted into relevant subcategories by theme. This category (including subcategories) is meant to contain pages in Wikipedia's portal namespace. It should not be used to categorize articles or pages in other namespaces.

This category contains Wikipedia portals. A portal is a focus page which highlights a particular subject to complement the main article on that subject. Portals feature articles covering the portal's theme, and generally provide lists of related articles, and thus provide an alternative means to browse on Wikipedia. Besides this category and its subcategories, there is also a complete list of portals on Wikipedia arranged by theme. There is a multilingual portal covering all of Wikipedia at www.wikipedia.org.