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 dayNT1279 : The Firth of Forth and its bridges by M J Richardson
Seen just after departure from Edinburgh on Runway24. From left to right The Queensferry Crossing, the Forth Road Bridge and the Forth Bridge. The Lomond Hills are on the skyline, about 37 km away
Today's Photo of the dayUMV9314 : Iptingen: Flur "Hinter dem Hohberg" by Andreas Gmelin-Rewiako
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.