This is a demo of a photographer’s web site where photos are searchable by keywords (tags). When you click on a year, a place and a subject, you see below all matching photos. If you select several years (or places, or subjects), the photos must match one of them. The Text Search searches the titles and the text body of the posts. More layouts are possible.
Overview » Demos of the WordPress Live Post Filter – Toggle Post Filter » WordPress Post Filter Demo – Photographs