SharePoint Responsive > Web Parts > Page Rollup
The PageRollUp Web Part can be used to roll-up pages under a subsite. These can be normal
Content Pages or
News Article 2 pages. The rollup itself is inserted on the landing page of the subsite (URL ends in /Pages/default.aspx), and the pages beneath it are automatically rolled up up with the web part when they're published.
This is an example of the PageRollUp webpart on the
Visual Guides landing page: