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 daySP8680 : Landscaping the River Slade valley, Kettering by John Stolarski
In the distance is the developing North Kettering Business Park. The photo was taken from a horse-rider's path being added to the amenities.
Today's Photo of the dayUMV4545 : Herxheimweyher: Kreuz aus rotem Sandstein by Harald Sogl
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.