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 daySJ3094 : Marine Lake, New Brighton by Oliver Mills
A Westerly view, looking towards the edge of the sea defences, now known as the Ian Fraser Walk. The density of the street lights in the distance give some impression of the length of this straight promenade. The buildings in the distance form part of a ...
Today's Photo of the dayULB2778 : Willich, Radweg an der Straße Im Eschert by Michael W
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.