Late last year we completed a website development project for the United Nations for the Asia-Pacific Regional Coordination mechanism. You can see the website we built on Drupal 7 here, http://www.unaprcm.org/.
This project links content relating to the various Thematic Working Groups and Sustainable Development Goals the UNRCM has. For example if a user needs to see the Publications, Events, and Meetings for a Thematic Working Group they can browse to, http://www.unaprcm.org/thematic-working-group/statistics. If a user wants to see the Publications, Events relating to a Sustainable Development Goal, they can go to a page like http://www.unaprcm.org/sustainable-development-goals/no-poverty and see the related content.