Geograph is a concept and open source code for a online website to create a comprehensive collection of photographs capturing every part of given region.
Currently there are three active projects, shown below - including a photograph from each.
Today's Photo of the daySD8222 : Vaccary walling on the south side of the Rossendale Valley by John Darch
Today's Photo of the dayUPA8214 : Wasserbecken bei der Pegnitzquelle by Siegmar Schmidt
Random photo (doesn't have a daily photo)WV4674 : Dixcart Bay and Hogsback Headland by Colin Smith
"Dixcart Bay - best near low tide when the sand is exposed, also the most easily accessible on the island. For shelter, try this one if the wind is northerly". www.sark.co.uk https://en.wikipedia.org/wiki/Sark
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.
... and a sub-project just focusing on images in Ireland, www.geograph.ie.
Geograph Germany/Deutschland, also has a German/Deutsch language version at geo.hlipp.de.