I implemented the website for the NANU e.V. in Augsbug in the beginning of 2016 as a replacement for the old content management system which was very cumbersome to handle.
The design was deliberately kept simple and one of the major requirements was that the end users are able to update the content easily without. Technically the system was based on WordPress with a custom layout.
I am not responsible any longer for the current version, but the website still uses WordPress.