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 dayNH3185 : Loch Coire Mhic Mhathain by Fionn McArthur
A favourite lochan of the deer, north of Carn Loch Srb0061006e0020M?
Today's Photo of the dayULC8014 : Castrop-Rauxel, Torhaus zum Schloß Bladenhorst by Michael W
Torhaus zum Wasserschloss Bladenhorst aus dem 13. Jhd.
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.