The Parks sample site is designed as a simple site that can be routinely updated from the front end of Joomla!.
As a site, it is largely focused on a blog which can be updated using the front end article submission.
New weblinks can also be added through the front end.
A simple image gallery uses com_content with thumbnails displayed in a blog layout and full size images shown in article layout.
The Parks site features the language switch module. All of the content and modules are tagged as English (en-GB). If a second language pack is added with sample data this can be filtered using the language switch.
Parks uses HTML5 which is a major web standard (along with XHTML which is used in other areas of sample data).
Parks Sample Site 
Parks Home