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 dayNT1511 : The steep east-southeastern slopes of Peat Hill by Walter Baxter
The initial slopes from Carrifran are very steep before easing off higher up. Carrifran Gans is in the background.
Today's Photo of the dayUPV5080 : Das Neue Rathaus in Nürnberg im Weihnachtsschmuck des Christkindlesmarkts by Günter G
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.