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 dayNF1099 : Fulmars on a turf roof by James Allan
The area uphill from the deserted village on Hirta is littered with dry-stone construction work, stores like this, known as cleits, souterrains, sheep fanks and miles of other stone walls.
Today's Photo of the dayUMV9549 : Ittlingen: alte Trafostation by Harald Sogl
Das alte Gebäude ist dem Naturschutz überlassen.
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.