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 dayNX0883 : Smugglers Festival, Ballantrae by Billy McCrorie
Contraband boats at the harbour. With view of the Ailsa Craig.
Today's Photo of the dayULB8051 : Lindlar Ebbinghausen - Blick nach Oberbergscheid by gps-for-five
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.