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 dayNT1378 : Train crossing the Forth Bridge by Richard Sutcliffe
A diesel multiple unit service crosses the Forth Bridge. The Forth Road Bridge can be seen in the distance.
Today's Photo of the dayULA4224 : Wegekreuz von 1786 im Weinberg östlich von Bekond by Paul L
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.