Five years ago, Flickr and the Library Of Congress joined forces to create Flickr Commons — a compilation of public domain photographs. Since that time, other institutions have also joined in. They just released a collection of their most viewed photos during that time, and it’s pretty neat.

Here are various presentations of them that have appeared throughout the Web:

Flickr celebrates Commons’ fifth year and 250k photos with galleries of most viewed pics is from The Next Web.

Flickr Commons’ most-viewed or most-favourited photos of the last five years is a slideshow from The Telegraph.

Flickr Commons marks 5-year anniversary with galleries of most-viewed pics is from DP Review.

The pictures we love best: Flickr celebrates fifth birthday with its most viewed images is from The Mail Online.

I periodically post “most popular” lists of websites (and photos and books) that I think educators might find useful. Of course, there are a number of ways to gauge “popularity.” I just view these lists as opportunities to check-out some new sites, and find it interesting to see which ones might be particularly “popular.”