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 dayNT2573 : The Edinburgh View by Simon Johnston
One of the most stunning views of the Old Town from the New Town. This taken from South St David's Street.
Today's Photo of the dayUMV4183 : Freinsheimer Oschelskopf by Klaus Graßmück
Weinlage und Denkmal für die Flurbereinigung. Im Hintergrund eine restaurierte historische Ruhebank
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.