Our detectives are back with the following intel on this WordPress site
The site is using the unibz theme by Giulio Roman, Anna Ricci .
We could identify 4 plugins (there might be more) - Accordion , Photo Gallery by 10Web – Mobile-Friendly Image Gallery , Social Icons Widget and Yoast SEO
This theme was developed to have Wordpress instances in harmony with the style of unibz's main webpages.
Photo Gallery is the leading plugin for building beautiful mobile-friendly galleries in a few minutes.